STUDIO CITY, LOS ANGELES (KABC) -- A shooting that left three men dead at a Studio City apartment building is being investigated as an apparent murder-suicide, authorities said.The shooting was reported about 11:30 p.m. in the 11000 block of Aqua Vista Street, according to the Los Angeles Police Department.Authorities say a 47-year-old man shot and killed two men in their late 60s. The suspect, who was related to one of the victims, then walked into the living room and used a shogun to take his life.According to investigators, the incident may have stemmed from a domestic violence incident though the motive is still under investigation.