Police are on the lookout for a suspect accused of repeatedly soliciting an underage girl for sex.

A worried mother contacted Madison police Monday morning after a man approached her 17-year-old daughter for a second time on Saturday evening and asked her if she would like to have sex in exchange for money, a police report said.

Police reported the first incident happened about six weeks ago, and both instances occurred as the girl was walking on Ashford Lane. According to the report, the mother said the suspect is dark skinned, older and drives a four-door vehicle.

The police report said people are encouraged to dial 911 immediately if they encounter anything suspicious.