The Spilsby flasher who exposed himself to a dog walker last week, struck twice in the same day, police have announced.
A second victim has come forward after reading reports of the first incident, which took place in the Vale Industrial Estate on Saturday morning.
The other witness was also approached in the town that morning and has provided a more detailed description of the offender.
He is now believed to be a younger man - in his twenties, rather than thirties as first thought - slim, with neatly shaven fair hair and around five foot 10 inches tall.
PC Andrew Price has advised those who see anyone matching the description, or who appears to be acting suspiciously to contact the police on 101.
Police increased patrols after the fist incident and have not received any reports of similar offences after the day in question.