BANGOR, Maine — A Penobscot County sheriff’s deputy suffered serious injuries Tuesday afternoon when he was involved in a two-vehicle collision on outer Hammond Street, Bangor police said.

The deputy, whose name was not disclosed, was traveling west when the Penobscot County sheriff’s vehicle he was driving collided with an eastbound Chevrolet Aveo driven by a woman whose name also was not released, Bangor police Sgt. Tim Cotton said at the scene across from Jason’s Pizza.

The crash occurred about 12:30 p.m., Cotton said, and hindered traffic on a busy Route 2.

The deputy and the driver of the sedan, as well as a passenger in the sedan, were taken to Eastern Maine Medical Center for treatment. A dog in the woman’s vehicle was taken to a local veterinarian, Cotton said.

Police did not disclose many details as they worked to reconstruct the crash before the arrival of a predicted snowstorm.

“There are several witnesses that saw things happen prior to this, and we just want to speak to all of them before we speak about what exactly occurred,” Cotton said.

Cotton said the deputy was wearing his safety belt and he was not sure if either of the women in the sedan were wearing seat belts. Air bags deployed in both vehicles, he added.

Bangor police Detective Tim Shaw is the primary investigator on the crash, and state police are assisting.

Cotton expected traffic to be diverted through Target Industrial Circle for the remainder of the afternoon commute as officials continued to investigate.