Detectives have issued a description of a man who sexually assaulted a woman in the street.
Officers had shut two sections at Talbot Road, Southsea and are continuing to investigate.
A 48-year-old woman was out walking two dogs when she was approached from behind by a man in the Manners Lane area of Southsea at around 5.45am.
The man was disturbed when two male cyclists road past and he fled.
He was white and about 5ft 8ins to 5ft 9ins tall. He was wearing dark clothing including a hooded top with the hood up and gloves, which may have been leather.
Detective Inspector Adam Price said: ‘We are particularly appealing for the two cyclists to come forward as they may have information which could help the investigation.
‘We are also very keen to speak to a woman who was in the area and was approached by the victim a short time after the assault asking for help.
‘Were you in this area of Southsea this morning? Do you know who the offender may be? Please contact us if you have any information which could help us identify the person responsible.’
Police say the victim suffered a minor injury to her face and was taken to Queen Alexandra Hospital as a precaution.
Officers are appealing for the two cyclists to come forward as they may have information which could help the investigation.
They would also like to speak to a woman who was in the area and was approached by the victim a short time after the assault.
A 29-year-old woman, of Cosham, was driving past when she saw the police at 8.25am.
She said: ‘The police had sealed off part of a section of Talbot Road.
‘I was going through Talbot Road.
‘Two police officers sealed off the alleyway.
‘They also sealed off another part in there, which I believe was connected to back gardens or a couple of garages.’
Anyone with information is asked to call Det Con Samantha Barber on 101, quoting 44170119402, or Crimestoppers anonymously on 0800 555 111.