LOS ANGELES—A man was arrested for allegedly fatally stabbing another man who intervened in a dispute between the suspect and his girlfriend today at a homeless encampment outside the West Los Angeles Veterans Affairs facilities. The attack was reported at about 6:40 a.m. at 11301 Wilshire Blvd., according to the Los Angeles County Sheriff’s Department. Paramedics took the victim to a hospital with a stab wound to the upper body, where he died. The Los Angeles Times reported he was a homeless veteran, but further information on his identity was not immediately available. A preliminary investigation revealed that the suspect was involved in a dispute with his girlfriend when the victim intervened and was stabbed, sheriff’s officials said. The girlfriend was not injured in the dispute. The suspect was detained at the scene by authorities and later taken to a hospital for medical clearance so he could be booked into …