A Cook County (IL) Jail inmate switched identities with another inmate and was wrongfully released while wearing a face mask last weekend weekend, the Sheriff’s office said.

On Saturday, Quintin Henderson, 28, was scheduled to be released from custody on an I-bond for a drug charge, when he gave his identity to another inmate, Jahquez Scott, for a promise of $1,000, the Sheriff’s office said.

Scott, 21, was wearing a protective mask when he used Henderson’s full name and personal information to pose as Henderson and leave jail on the I-bond, the Sheriff’s office told CBS.

Scott had originally had a $50,000-D bond for unlawful use of a weapon, and was going to be placed on electronic monitoring if he made bond, the Sheriff’s office said.

An internal investigation was under way Tuesday evening, and authorities were searching for Scott – who has a record for aggravated battery to a police officer, possession of a controlled substance, and criminal trespass to land.