A holiday weekend checkpoint on Sunday by State Police and the West Seneca Police Department netted four arrests.
The checkpoints occurred on Transit Road in the towns of Elma and West Seneca.
Jonathan Kukura, 30, of Buffalo was arrested for driving while intoxicated.
Stephany C. Pause, 26, of Buffalo; Justin M. Mays, 22, of Alden; and Megan Hardy, 21, of Lancaster, were arrested for possession of marijuana.
Pause also was charged with criminal possession of a controlled substance, which pertains to other drugs.
Nine traffic tickets were issued during the checkpoint.
State Police had warned that they would be setting up such checkpoints over the holiday weekend.