Relatives checking up on a Harlem grandmother who went missing for days were met with a disturbing shock when they paid a visit to her apartment Wednesday, police said.

When the concerned relatives of 76-year-old Cora Davis walked into her E. 124th St. apartment around 11 a.m. they found her grandson Larry Davis, 21, having sex with a woman on the bed.

Sources tell New York Daily News, a relative questioned Davis, asking him where his grandmother was. Soon after, an argument broke out between the man and the relatives. When police were called, the 21-year-old fled the scene.

The woman who he was having sex with reportedly stayed behind.

When police arrived, a search of the apartment uncovered the gruesome discovery of Cora Davis' body stuffed in the bedroom's closet underneath clothes, sources told the News.

Although evidence suggests the grandmother was strangled, an autopsy will determine the exact cause of death.

Photos: Notable South Floridians who died in 2013

As police continue to search for Larry Davis Thursday, family and friends are mourning the death of a woman described as "lovely."

"She was a beautiful woman," Rodriguez told the News. "I knew her most of my life."

Larry Davis reportedly has a lengthy criminal record, including arrests for drug possession, assault and trespassing.