Teenage girl sexually assaulted in Londonderry
A teenage girl was sexually assaulted in Londonderry on Friday night.
The 17-year-old was approached by an unknown man in the St Columb's Park area of the city at around midnight and sexually assaulted.
The attacker is described as being aged in his 30s.
Appealing for witnesses, the police say the investigation is at a very early stage and urge anyone with information to contact them on 101.