Responding police noted Mark McKeown’s “slurred speech, odor of alcohol” and “glassy and bloodshot eyes” at the scene of the rear-end collision Saturday night along the 400-block of VFW Parkway in

A Massachusetts woman is charged with Operating Under the Influence after a weekend crash that left her car upside-down in a small body of water, police said.

Detective Mark Joseph McKeown, 52, of Dedham, was initially slated for arraignment Monday in Brookline District Court on a single OUI count, but the hearing was delayed until Feb. 4, according to legal filings.

An off-duty sergeant with the Boston Police Department is accused of driving drunk and crashing into another car on VFW Parkway. The sergeant, Mark McKeown, was also described in a police report of behaving in a vulgar manner toward Brookline police officers who arrived at the scene of the crash.