CCTV footage has been released in a bid to identify a potential witness after a group of schoolgirls were allegedly approached in suspicious circumstances.
Shortly before 8.30am on Tuesday, November 22, the man, believed to be in his 20s, approached three girls on Kettering Road, Rothwell.
The girls became concerned and ran off.
A police spokesman said: “We are trying to establish the facts of exactly what happened and what caused the girls to become afraid.
“We know that this was a busy time on a busy road and it is likely that other people may have seen something, and we would urge them to contact us.
“We don’t want to alarm anyone and the children involved were not harmed in any way.
“We are keen to identify and speak with the man in the CCTV who may have vital information that could assist the investigation and would urge him to make contact.”
Anyone with information can contact Northamptonshire Police on 101 or they call Crimestoppers anonymously on 0800 555111.