Police have stepped up their patrols in Chorley after a serial sex pest struck for the fourth time.
Chorley Police are now urging anyone with information to come forward after the man, believed to be aged between 40 and 50, exposed himself to a fourth victim.
They are also using plain clothed officers to target the areas where women have been flashed at by the male, including Queens Road, Devonshire Road and Euxton Lane, close to the lay-by near Chorley
Community Beat Manager Ian O’Brien, from Chorley Police, said: “We are asking for anyone who might have seen this man to contact us with any information they have.
“Victims may feel shocked when they experience something like this, but we need them to ring us straight away so that we can catch him.
“We’d also like to hear from anyone who may have seen anyone acting suspicious in those areas or may recognise the man from the description.
“He is said to be a white male, aged between 40 and 50 and was wearing a black bob hat, or something similar.
“He is described as having a three quarter length coat that he opens to expose himself.”
The man first struck on April 25 at 4.10pm in Queens Road.
He then exposed himself on May 18 in Devonshire Road at 9.08pm.
He targeted two women on May 20.
The first in Euxton Lane at 2.30pm and again in Devonshire Road at 10.36pm.
In the first incident, the man approached a 34-year-old woman who was walking along Queens Road and opened his coat and exposed himself before walking off.
She described the man as being around 5ft 8ins and was wearing blue jeans.
CBM Ian O’Brien added: “We have increased police patrols in the area and we also have plain clothed officers working on the streets.
“The man has not tried to use physical violence and we do not believe he poses any significant danger to the public, but we would ask people to be vigilant and report anything suspicious.
“They can contact me directly at the station by ringing 01257 246225 or Crimestoppers anonymously on 0800 555 111.
“All of the information given to the charity is kept anonymous and you will not be asked to go to court.”