MANILA (BLOOMBERG) - Philippine Airlines Holdings President Lucio "Bong" Tan Jr, the son of Philippine billionaire Lucio Tan, died on Monday (Nov 11), days after collapsing during a basketball game. He was 53.

The younger Tan succumbed to brain herniation, the Philippine Star reported. He had entered a hospital on Saturday.

Philippine Airlines Holdings, the listed parent of Philippine Airlines Inc, didn't immediately respond to a request for comment.

"His untimely passing leaves a deep void in our hearts and our group's management team, which would be very hard to fill," his sister Vivienne Tan said in a statement, referring to him as "an elder brother whom we all relied on for advice, counsel and leadership."

He is survived by his wife and two sons.

The sudden death of Tan Jr casts doubt over the leadership of the airlines to banking group, especially as he was seen as a potential successor to his father, said Rens Cruz, an analyst at Regina Capital Development Corp.

His passing "will definitely add a layer of uncertainty," Cruz said.

Tan Jr had taken over as president and chief operating officer at PAL Holdings on Oct 28. He was also the president of Tanduay Distillers and Eton Properties
Philippines and a director of LT Group and the Philippine National Bank.