Baltimore police are investigating how an image that appears to be a homicide victim’s wrapped body was posted to the Facebook page of the alleged killer while he was behind bars.

The image that was posted to the Facebook page of 28-year-old Jermaine Jackson on Monday appeared to show a large object on a basement floor wrapped in a sheet and plastic.

According to police, that’s how the body of Jackson’s boyfriend, Andre Nicholas, also 28, was found by officers after Jackson told his mother that he had stabbed Nicholas.

Jackson, however, has been held at Central Booking without bond since Sunday. Police said they were aware of the image — which was later removed — and did not believe that it had been posted from jail.

Detectives “are certain that the suspect does not have access to his cellular phone in jail,” Detective Jeremy Silbert, a police spokesman, said in an e-mail. Silbert could not confirm that the image was Nicholas’s body.

Silbert said detectives believe that an acquaintance of Jackson’s had his phone and posted the photo. A corrections official would not immediately comment on the case.

The city jail has been cracking down on contraband cellphones and installed phone-jamming technology this year.

Friends of Nicholas’s said they saw the photo and contacted police about having the image removed from the Facebook page.

Mark McLaurin, a friend of Nicholas’s, called him “an incredible presence in the community.”

“He had a big heart and did a lot of community work, and I honestly don’t know people who were better known than him and so universally well liked,” McLaurin said.

— The Baltimore Sun