BENSALEM, Pa. (AP) — Authorities say a man found stabbed inside his apartment last week was attacked by his two stepsons and another man.

The arrests of 21-year-old Alberto Alvarado-Rodriguez, his 20-year-old brother Christopher Alvarado and 26-year-old Kelvin Peralta were announced Friday. All three men are charged with attempted homicide.

Authorities say the victim was stabbed multiple times during the Feb. 6 attack. He was hospitalized in critical condition.

A possible motive for the attack has not been disclosed.

It wasn't known Friday if any of the suspects have retained lawyers. Bail for each man was set at $10 million.