The sister of Boston marathon suspect Dzhokhar Tsarnaev was arrested Wednesday on suspicions that she made a bomb threat against a New York woman who was previously involved with her boyfriend.

The Associated Press reports that Ailina Tsarnaeva, of North Bergen, New Jersey, made the threat against a Manhattan woman over the telephone Monday. She reportedly turned herself in at a Manhattan police station, where she was charged with aggravated harassment.

New York Police Department spokesman Lt. John Grimpel told the The Jersey Journal that the threat was made against a woman from Harlem who has a child with Tsarnaeva's boyfriend. The woman's identity has not been released.

Tsarnaeva reportedly told the woman: “Leave us alone. I know people who can put a bomb on you,” according to the New York Post. The paper added that the unidentified woman is locked in a bitter dispute with Tsarnaeva's boyfriend over the custody of their child.

The Boston Herald reports that Tsarnaeva was released on a ticket to appear at a Manhattan court at a later date.

Tsarnaeva's brothers, Tamerlan and Dzhokhar Tsarnaev, are suspected of planting bombs at the 2013 Boston marathon that killed three spectators and injured scores. They are also accused of killing a Massachusetts Institute of Technology police officer as they sought to evade arrest.

Tamerlan was killed in a shootout with law enforcement. Dzhokhar is currently in custody awaiting trial on charges of using a weapon of mass destruction and malicious destruction of property resulting in death. He could face the death penalty if convicted.

The Los Angeles Times reports that Tsarnaeva came to the U.S. in 2003 with Tamerlan and another sister, Bella. Dzhokhar and their parents, Anzor and Zubeidat, had arrived a year earlier and settled in Cambridge, Massachusetts.