The parents of a 13-year-old Boston girl missing since May heard from her during a phone call Sunday night, when she whispered she wanted to come home, MyFoxBoston.com reported.

The call was abruptly disconnected, leaving Erika Rivera’s mother, Zenaida Roman, to believe her daughter is being held against her will by a 16-year-old boy who brags about being in a gang, the station reported.

"She was like, 'I want to come home; I want to come home,' " the girl's mother said. "But she was like whispering in like a desperate way."

Erika was last seen on May 25 when she showed up for school in Belmont, but never made it to any of her classes. In April, Erika reportedly disappeared with the boy for five days.

Capt. Peter Hoerr, from the Belmont Police Department, said the girl’s parents have taken an active role in the search by distributing posters and handouts.

Hoerr told FoxNews.com police are actively searching for the girl and have not identified a suspect. The girl has a history of running away from home, he said.

Click for more from MyFoxBoston.com