LAS VEGAS (AP) — Police in Las Vegas say the father of a 4-year-old boy forced his way into his estranged girlfriend's home, where he bound and stabbed the mother and child before killing himself.

Officer Laura Meltzer said Thursday the child died and his mother was hospitalized with severe knife wounds after the apparent murder-suicide about 7 p.m. Wednesday at a house southwest of the Las Vegas Strip.

The boy's grandmother was also in the house but was not injured.

Police say she took the woman and boy to a nearby hospital before officers entered the home and found the man dead.

Meltzer says it appeared he was the sole assailant, and that he stabbed himself to death.

The names of the dead man, boy and woman weren't immediately made public.