Ottawa County deputies need your help finding the man they say robbed a gas station in Jenison early Monday, March 13.

Investigators got the call around 12:58 a.m. from the Speedway station on Baldwin Street near the corner of 20th Avenue.

An employee told deputies a man came in to make a purchase. When he got to the counter, he pulled out a knife and demanded money.

The suspect got away with some cash. Witnesses describe him as a white man in his late teens to early 20s. He's around 5'9" or 5'10" and 170 pounds.

Investigators say the suspect ran away from the Speedway station and they used a K-9 unit to track him. But the dog lost the scent.

If you know anything about the robbery, you're asked to call the Ottawa County Sheriff's Dept. or Silent Observer at 1-877-SILENT.

►Make it easy to keep up to date with more stories like this. Download the WZZM 13 app now.

Matt Gard is the Senior Producer of the 13 Morning News. If you have a story idea, you can contact him on Twitter, @mgard_wzzm13 or by e-mail,