A woman was spotted performing a mid-afternoon sex act on a man by passers-by in a rural Northamptonshire street, police have said.
The couple were seen carrying out the suspected indecent act in Crick Road, Yelvertoft, between 4.10pm and 4.30pm, on Tuesday.
The man is described as white, short, balding, around 5ft 8ins, in his late 40s, of medium build, with grey hair, with a dark blue polo shirt and light blue jeans.
The woman was white, around 5ft 9ins, in her late 50s, of slim build, with shoulder length dark, greying hair, with a knee-length blue cardigan with a white top underneath.
Witnesses are asked to call police on 101, or Crimestoppers anonymously on 0800 555111.