Potential Motive in Concord Shooting

A Concord man accused of fatally shooting his half-brother in the back of the neck believed that his sibling had ‘ratted’ on him to Concord police in a separate investigation, according to a police document in the case.

Jesse Sullivan, 32, is charged with first-degree murder in the Jan. 16 killing of 19-year-old Zackary Sullivan.

The document, a probable cause statement to search an iPad recovered at the scene, provides new details on the nature of the shooting and a potential motive.

It was unsealed in response to a request filed by the Concord Monitor.

Twenty-four-year-old Rory Sullivan was driving his brothers to go snow plowing in Concord on a Tuesday evening when Jesse, in the backseat, shot Zackary, in the passenger seat, from behind at point-blank range, Rory told police.