Brother of missing student, 23, who has not been seen since leaving a house party in Bristol 10 weeks ago, says he keeps visiting the area where he was last seen

The brother of a 23-year-old student who went missing after leaving a house party in Bristol 10 weeks ago says he keeps visiting the area where he was last seen. 

Jack O'Sullivan has not been seen since March 2 with the last confirmed sighting of him on CCTV at 3.13am near a grassy area beneath Brunel Way.

The law graduate last made contact with a friend shortly after 3.30am, but officers said his phone remained active on the Find My Friends app up until 6.44am.

Ben O'Sullivan has said he keeps returning to the area to try to work out where his younger sibling might have gone. 

'We know he went to a pub in town and then went on with a few friends to house party in Hotwells,' Ben, 27, told BBC Newsbeat.

Friends of Jack O'Sullivan, the 23-year-old who went missing after leaving a house party in Bristol nearly two months ago, have launched a fresh search for the law graduate

Friends of Jack O'Sullivan, the 23-year-old who went missing after leaving a house party in Bristol nearly two months ago, have launched a fresh search for the law graduate

Jack O'Sullivan (right) pictured with his brother Ben (left) who has said he keeps returning to the last places his missing brother was seen

Jack O'Sullivan (right) pictured with his brother Ben (left) who has said he keeps returning to the last places his missing brother was seen

Ben described his disappearance as 'very, very out of character' and called his brother a 'very smart, loving individual'.

Jack had been living at home with his parents, who realised he was not home at 5am. 

His mother Catherine O'Sullivan previously recalled how she woke up just after 5am that morning and 'instantaneously' knew 'something's wrong'.

Her and her husband, Alan, immediately went out to search for him, in what would soon be the first of many days of 'hell'.

Ms O'Sullivan told the Telegraph: 'We live hour by hour. You can't plan for the next day; we just communicate with police and we wait.'

Jack, who turned 23 on March 28, nearly a month after his disappearance, was described by his mother as sporty, determined and gentle.

Point 1: Jack O'Sullivan is seen walking across Junction Swing Bridge on the night he went missing at 2.53am

Point 1: Jack O'Sullivan is seen walking across Junction Swing Bridge on the night he went missing at 2.53am

Point 2: He was then seen on CCTV turning on to Brunel Lock Road at 2.57am

Point 2: He was then seen on CCTV turning on to Brunel Lock Road at 2.57am 

Point 3: Around 13 minutes later, at 3.08am, he was seen passing a car park near McAdam Way

Point 3: Around 13 minutes later, at 3.08am, he was seen passing a car park near McAdam Way 

Point 4: He was then seen at 3.13am near a grassy area beneath Brunel Way which is a raised road

Point 4: He was then seen at 3.13am near a grassy area beneath Brunel Way which is a raised road

Point 5: At 3.25am he was potentially spotted on CCTV walking across Plimsoll Bridge

Point 5: At 3.25am he was potentially spotted on CCTV walking across Plimsoll Bridge

Point 6: The last CCTV footage of what police think is him walking up Bennett Way at 3.39am

Point 6: The last CCTV footage of what police think is him walking up Bennett Way at 3.39am

She said: 'He put tremendous amount of effort into his next steps. He had already secured summer placements which are really hard to get. But he put in 45 applications.'

She added: 'Jack is a really good chap. He's very gentle. He just wanted to make sure everybody else was OK.'

He had gone to meet friends in Bristol for a usual Saturday night out, travelling by bus at 8.20pm from his village Flax Bourton to a Wetherspoons pub in the city.

At 10.45pm he texted his mother that they had moved on to a house party and safely arrived at the new location. 'All good, keys are safe,' he wrote. 

And at 1.52am he sent her a final text, saying he was OK.

Then shortly before 3am Jack left the party alone, CCTV has captured part of his journey through the city.

He is seen crossing the Junction Swing Bridge at 2.53am, turning down Brunel Lock Road at about 2.57am, passing a car park near McAdam Way at 3.08am, near a grassy area beneath the raised Brunel Way at 3.13am, walking across Plimsol Bridge 3.25am and was last seen walking up Bennett Way at 3.39am.

Avon and Somerset Police have said that the last two sightings are 'likely' to be Jack with the last officially confirmed sighting of him on CCTV being at 3.13am.

He called a friend who was still at the party at 3.24am. When the friend returned the call ten minutes later, Jack answered the phone and said 'hello' but nothing else. The call lasted for 58 second before being disconnected.

He had gone to meet friends in Bristol for a usual Saturday night out, travelling by bus at 8.20pm from his village Flax Bourton to a Wetherspoons pub in the city

He had gone to meet friends in Bristol for a usual Saturday night out, travelling by bus at 8.20pm from his village Flax Bourton to a Wetherspoons pub in the city 

Jack O'Sullivan's parents Catherine and Alan O'Sullivan (pictured) have begged the public to help find their son and pleaded for anyone who may have come across his phone to come forward

Jack O'Sullivan's parents Catherine and Alan O'Sullivan (pictured) have begged the public to help find their son and pleaded for anyone who may have come across his phone to come forward

Ms O'Sullivan said the friend left the party soon after and added: 'She tried and tried to get hold of him but couldn't. She sent messages to him saying, "please let me know where you are, please let me know you're OK" and "please let me know when you get home".'

His family have now taken to walking his final route every day and at different times of the day just to try and experience what it might have been like for Jack, and any indication as to what could have happened.

One said they 'wanted to see if it was dark' but discovered that it's 'incredibly well-lit'.

Police have recently said that they are working on a hypothesis that he may have fallen into the river.

They also approached the family with a key that was found by authorities that they thought might have belonged to Jack but it was not his.

Jack is described as white, around five foot 10 inches tall, of slim build, with short, brown hair.

He was last seen wearing a quilted green/brown Barbour jacket, a cream knit lambs wool jumper, navy chinos, and brown leather Ralph Lauren trainers with white soles and a chunky Hugo Boss silver watch.

Jack was also in possession of an Apple Air Tag in a brown leather case, a Peugeot 108 key fob, his driving licence, black card holder and his house key.

Since his disappearance, police divers have been scouring the area around the Cumberland Basin and the Avon Gorge, while police have repeatedly renewed their appeal for people who were driving, walking or were bus passengers in the area at the time, to get in touch.

If you can help, please call 101 and give the call handler the reference number 5224055172.