Bowman was scheduled to appear in court for a second-degree assault charge from a February incident.
Mech and Singer were being held at the Baltimore County Detention Center. Mech is being held without bail and Singer is being held in lieu of $1,000,000 bond. Court records did not show an attorney for either.
Neighbors outside the couple's rowhouse in Brooklyn said Mech and Singer each have young children from previous relationships. They said the couple lived there for about a year.
A man who identified himself as an uncle to Bowman declined to comment.