A woman has been raped in Dungannon.
It happened in the Peatlands Park area of the town on Wednesday.
The PSNI initially said only that they were dealing with a serious incident in the area.
Detective Inspector Lynne Knox said in a statement on Thursday morning: “Police received a report that at approximately 2.45pm as a woman was walking her dog in the Peatlands Park area she was sexually assaulted by an unknown assailant.
“The male made off from the scene on what has been described as a black mountain bike.”
“This was an appalling attack and police are pursuing all investigative lines of enquiry and I would appeal to anyone who may have witnessed this assault or observed anything suspicious to contact Detectives at the Rape Crime Unit on the non-emergency number 101.
“Alternatively, if someone would prefer to provide information without giving their details they can contact the independent charity Crimestoppers and speak to them anonymously on 0800 555 111.”