DOVER, Del.-- Police say that a University of Delaware student was killed after threatening people with a BB guns.

Quinn Annable (20) was declared dead by the Delaware State Police on Tuesday morning.

Annable was found unresponsive by correctional officers at Howard R. Young prison, Wilmington on Thursday night. Annable was taken to Christiana Hospital with critical condition after officers began CPR and other life-saving measures.

Annable was currently being held on $20,000 cash bail. He was admitted to hospital and his bail conditions were changed to unsecured bail. Annable was released from Department of Correction custody Friday. It is not clear who or why the bail modification was requested.

Annable's death was not attributed to suicide. A spokesperson for DOC refused to comment on whether DOC requested bail modification.

Annable was a sophomore at UD. He was arrested by Newark police on Oct. 6, and charged with possessing a firearm in the commission of a felony as well as two counts each of aggravated menace. UD police also charged him with possessing a firearm in the commission of a felony as well as second-degree assault.

Newark police reported that they received a report from two individuals shortly before 8 p.m. Oct. 3. They claimed they were walking along Academy Street when a driver following them pointed a gun at them and threatened to shoot them.

A man claimed that he was walking along Academy Street when he was accidentally shot with a BB gun. Both the suspect and vehicle match details from the previous incident.

Annable was identified by Newark police through video surveillance and witness testimony. According to police, Annable was found with an "air pistol that shoots metallic pellets".