State police made 20 arrests for driving while under the influence of drugs or alcohol during Memorial Day weekend, according to their holiday enforcement weekend statistics issued Tuesday.

Increased enforcement began at 12:01 a.m. Friday, and ran until 11:59 p.m. Monday. Troopers focused on drunken driving violations, aggressive drivers, distracted drivers and speeding, authorities said. Sobriety checkpoints and DUI patrols were also implemented throughout the holiday weekend.

On Monday, state police said they had investigated 341 car crashes, 52 of which included injuries and one fatal motorcycle crash on Route 2 in Marlborough that killed a Colchester man.

State police said they additionally received 7,540 calls for service.

According to the enforcement statistics, troopers responded to 2,242 moving violations, including unsafe lane changes, following too closely, cell phone use, speeding and seatbelt violations. Of the moving violations, police said they responded to 607 speeding violations and 448 seatbelt violations.

Last year, state police investigated 313 crashes during the entire Memorial Day weekend, one of which was fatal, and 38 DUI arrests were made that year.

Troopers also responded to 909 speeding violations, 396 seatbelt violations and 2,708 other moving violations during the holiday weekend.