A naked 2-year-old boy was found sleeping in the hallway of a Dorchester apartment building yesterday, using his diaper as a pillow, Boston police said in a statement. A resident notified police, who found the child at about 2 a.m. in a common hallway on the second floor, surrounded by feces and vomit. Emergency medical workers transported the boy to Carney Hospital for treatment and evaluation. Officers found the boy’s father in one of the apartments in the Hancock Street building. He told officers his son “probably left the apartment after I fell asleep.’’ Elsewhere, an 11-year-old boy called police around 3:20 a.m. after he could not find his mother when he woke up in his Tonawanda Street home. Officers located the boy’s grandfather and left the boy with him. Police filed reports in both incidents that were forwarded to the Department of Children and Families. Detectives will conduct follow-up investigations, police said.

Police investigate alleged attack on couple Boston police are investigating an attack early yesterday by two men wearing Marine uniforms, who allegedly told a woman walking downtown with her boyfriend that she should “drop that zero for a hero’’ before punching, kicking, and hitting him with a beer bottle. Police said they were called to Milk Street for a report of assault and battery at 12:34 a.m. The man, who sustained a head laceration and a compound fracture of the left ankle, and his girlfriend told police they were walking down High Street when they were approached by a group including the two men in Marine uniforms, police said. Words were exchanged and the other Marine punched the victim in the face, police said. One of the men said, “We’re Marines, we’ll kill you,’’ and struck the man in the head with a beer bottle, police said. Police are asking anyone with information about the incident to contact the Boston police downtown detective unit at 617-343-4248.