A 26-year-old man was was shot by police in Bucks County after allegedly beating his mother and then threatening officers with a knife, the District Attorney said.

Victor Arango, 26, was under guard recovering from surgery at Aria Health-Torresdale Campus after being shot once in the lower abdomen, said District Attorney David Heckler.

An officer also was hospitalized with non-life-threatening injuries after falling down some stairs during the confrontation between Arango and police, Heckler said. The mother, a woman in her 40s, was treated and released.

Police were called to the Country Commons Apartments at 3338 Richlieu Rd. shortly before 4 p.m. to respond to a report of a man beating his mother, Heckler said.

Both Arango and his mother had been banned from the property, but had returned to stay with an older blind man, Heckler said.

Two officers approached the older man's apartment and encountered Arango outside the front door yelling and acting disorderly, Heckler said. Arango went inside, and when the officer went to the door, he came out with a knife.

The first officer shot him, and during the scuffle the second officer fell back, Heckler said. She recovered to help cuff Arango, who faces charges of aggravated assault and related offenses.

Contact staff writer Robert Moran at 215-854-5983 or bmoran@phillynews.com.