BRENTWOOD - Suffolk police are investigating the murders of two brothers from Brentwood, and detectives say they're examining the possibility that the killings were gang-related. Eston Ceron, 21, and his 19-year-old brother, Ricardo Ceron, were fatally shot as they sat in a car on Lincoln Avenue just after 3 a.m., police say. A passing motorist in a black SUV was also shot, although police have not released his identity or current condition. Neighbors say they were told by police that the SUV driver had been shot after he pulled over to help. Police have not made any arrests in the shootings. They have not said if they believe one or more gunmen were responsible.Police probe double homicide in Brentwood