NEW CANAAN — Police made six arrests as a result of a sobriety checkpoint held over the holiday weekend, including one for domestic violence.

From 6 p.m. on July 1 to 2 a.m. the following morning, police conducted the checkpoint on Old Stamford Road near the entrance ramp to the Merritt Parkway.

One of the vehicles to pass through the checkpoint contained Yaminah Vargas and another person who had blood on their teeth and lip. When police asked the victim how their mouth was bloodied, the victim said Vargas, of Mount Pleasant Drive in Trumbull, had hit them in the mouth while the victim was driving.

Vargas, 26, was charged with third-degree assault and released at the scene on a promise to appear in court July 3. Police said they won’t be releasing further information on the matter as it is domestic in nature.

Police also made several arrests for driving under the influence after pulling over several drivers who displayed signs of intoxication and failed field sobriety tests.

Jhony Vasconzuelo-Relyayze, 45, of Ridgewood Avenue in Stamford, was charged with DUI. Police also arrested Andrew Wasencky, 41, of Soundview Avenue in Norwalk, and charged him with DUI and possession of drug paraphernalia after police found drug-related materials in his car.

Beiran Velasquez, 26, of Jelliff Mill Road in New Canaan, was charged with DUI and driving without a license.

Police also took Carlos Figueroa, of McLoughlin Street in Glen Cove, N.Y., into custody after he drove through the checkpoint and police noticed an odor of marijuana coming from his vehicle. The 25-year-old failed a field sobriety test and officers found drug paraphernalia and .635 ounces of marijuana in his possession. He was charged with use and possession of drug paraphernalia and possession of over half an ounce of cannabis.

Wilfredo Tello, 38, of Cantwell Avenue in Stamford, was charged with drinking while driving after officers saw him driving with an open beer in his car.; @erin_kayata