A Newbury man has been arrested on suspicion of exposing himself in a West Berkshire park.
The man appeared to be having a seizure, but when asked if he needed help or an ambulance he ran away.
It follows reports of a man acting suspiciously in Linear Park, Calcot.
The reported incidents happened between 6.20pm and 7.10pm on Thursday, September 10 and between 3.40pm and 6pm on Sunday (13/9).
The man is described as white, aged in his late forties, approximately 5ft 4ins, and of a stocky build.
He was wearing a dark baseball cap and had a rucksack on his back.
Police would like to speak to a women who spoke to the man, or anyone else who has any information about these or other suspicious incidents in the park.
Investigating officer, PC Colin Fearn from Local CID at Newbury police station, said: “We have had a number of reports about a man acting suspiciously in the Linear Park area. We have also had reports of an exposure, and I would like to hear from any witnesses or victims as soon as possible.
“The park is popular with dog walkers and as the offences took place in daylight I am sure that there would have been people who saw what happened.
“I am aware that there are concerns among local residents and I would like to reassure people that we are conducting a thorough investigation to establish exactly what happened. If anyone has any information who has not already spoken to police, please come forward and speak to me as soon as possible.”
A 49-year-old man has been arrested on suspicion of exposure on Sunday.
He has been bailed until October 8.
Anyone with information about the incident please call the 24-hour Thames Valley Police enquiry centre on 101.