OAK PARK, Ill. (CBS) – The family of Anibal Calderon, who allegedly died violently while in the care of a nursing home, has hired a law firm to investigate.

Earlier this month, the 80-year-old died of head injuries that may have stemmed from a fight with another resident at the Oak Park Healthcare Center, at 625 N. Harlem Ave. in Oak Park.

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Police have said another resident at the nursing home, a 66-year-old man, beat Calderon in the head with something after an argument.

“You put your father in a place, he’s supposed to be safe,” Anibal Calderon’s son, Robert, said Monday. “It turns out he’s not.”

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Family members say they hope they’ll find justice and prevent another family from feeling the pain they’re experiencing now.

“These types of incidents only happen when there’s a failure to properly monitor and supervise the residents,” the Calderons’ attorney, Mike Bonamarte, said.

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The attorney for Oak Park Healthcare Center could not be reached for comment.