By CBS13 Staff

WOODLAND (CBS13) — Police in Woodland are investigating a string of ATM robberies that have hit the city in recent weeks.

On Friday, Woodland police announced that there had been two robberies this week at the Yolo Federal Credit Union drive-up ATM along W. Main Street. Police say both incidents happened between 11 p.m. and just after midnight.

READ MORE: 'He Gives Me Everything To Be': Therapy Dog For Woman In Wheelchair Now Needs Wheelchair Of His Own

Both recent incidents also saw the suspect armed with either a gun or a knife, police say.

READ MORE: Quake Near Truckee: Why Some Got Shake Alerts And Others Didn't

Investigators say there have been a total of four ATM robberies now over the past six weeks. Only three of those incidents, however, are believed to be similar.

MORE NEWS: Sacramento Police Officer Justin Shepard Arrested For Alleged Domestic Violence Incident

Police urge people to use precaution and scan their surroundings when using an ATM, or even just avoid using one at night.