Boston police are searching for the person or people responsible for fatally shooting a young man in the city's Mattapan neighborhood.The shooting happened at about 11:30 a.m. Sunday near the intersection of Fremont and Babson streets, according to police.Officers found a young man, who has not been identified, in the area of 119 Babson St., who was suffering from multiple gunshot wounds. Police said Boston Emergency Medical Services personnel responded to the scene, but the victim died of his injuries before he could be transported to a hospital.Investigators believe, at this time, that the shooting victim was targeted and that the shooting was not a random attack."This is a part of the city with an incredibly strong community: so many residents who come together to plan and make sure that everyone's on the same page. Today, on a morning when so many families were at church or just enjoying the quiet Sunday morning, it's incredibly painful to have this take place," said Boston Mayor Michelle Wu.No arrests have been made, and no information has been released about a suspect or suspects.The shooting remains under the investigation of the Suffolk County District Attorney's Office and the Boston Police Department.Anyone with information about the shooting is asked to call the BPD Homicide Division at 617-343-4470. Those who wish to remain anonymous can call the Crime Stoppers Tip Line at 1-800-494-8477 or by texting the word "TIP" to 27463.