A person died following a shooting at a Lawrence house party early Sunday morning when six people were struck by gunfire, according to the Essex County District Attorney’s Office.

The Lawrence Police Department responded at about 3 a.m. to a disturbance call at 5 Royal Street, Apt. 3, where they found the shooting victims.

All six people were taken to Lawrence General Hospital, where one of the victims was pronounced dead.

Two of the other victims were flown by medical helicopter to Boston hospitals for additional treatment.

“Based on the initial investigation, the shootings are not believed to be a random act of violence,” the Essex DA’s Office said in a statement.

The name of the person who died is being withheld pending notification of next of kin.

The shootings are being investigated by the Essex County District Attorney’s Office State Police Detective Unit and detectives from the Lawrence Police Department.