Police in several southern Worcester County towns are seeking a man in a gray car after reports of attempted child abductions in the past week.

In the most recent incident on Saturday, a young child told his mother that a man in a gray car approached him. Police described the child as "frightened." The child described the car as a gray Chevrolet Impala with rounded tail lights. He said the driver was male, but did not provide an additional description, according to police.

Police in Mendon report that the car is similar to one involved in incidents in several nearby towns.

Upton police also reported an 11-year-old girl in their town being approached by a man in a gray sedan over the weekend. The girl described the man as being middle aged.

In an incident last Wednesday in Uxbridge, a child was reportedly approached by a man in his 60s, light skinned and wearing a gray hat and glasses at around 3 p.m. He was also reported to be in a gray sedan, four-door with a red, white and blue Massachusetts license plate and having a rectangle sticker on the left lower rear window.

The suspicious gray sedan also reportedly followed a teenager in Sutton after the teen got off the bus around 2:20 on a dead-end road.

Police in all towns are warning residents to be on alert and report any suspicious behavior.