ALTADENA – A sheriff’s SWAT team found a man who shot and wounded his mother dead inside a Lincoln Avenue home following a five-hour standoff Sunday, officials said.

The man barricaded himself in his house in the 3200 block of Lincoln Avenue about 2:45 p.m. after shooting his mother, according to Los Angeles County sheriff’s Capt. Mike Parker. The woman’s wounds did not appear life-threatening.

Deputies summoned a SWAT team after the man failed to come out of the home and surrender, Parker said. He was believed to be armed with a rifle and “several other weapons.”

During the five-hour-long standoff that followed, sheriff’s crisis negotiators attempted to coax the shooting suspect out of the home, the captain said.

Deputies forced their way into the home about 8:15 p.m. and discovered the man dead, sheriff’s officials said.

Detectives from the Sheriff’s Homicide Bureau are now handling the investigation. No further information was available.

The shooting was the third reported in the same neighborhood in three days.

A 22-year-old man was found shot in the arm shortly before 11 p.m. Friday Saturday after deputies broke up a large party in the 3200 block of Dabney Street, according to Sgt. Debra Herman. No information on a suspect or motive was available.

About an hour earlier, two attackers opened fire on a group of three men near Loma Alta Park, at Lincoln Avenue and Loma Alta Drive, the sergeant said. The men were not wounded.

The suspects were described only as heavy-set black men who fled the area on foot.