A woman woke in the early hours of the morning to discover a man trying to climb through a bedroom window.
The victim, a 37-year-old woman, was asleep in her property in Ulyett Place, Oldbrook, when she was woken by a noise at about 5.10am on Friday.
She went to investigate and saw a man trying to climb through her bedroom window.
The offender saw the victim and fled the scene.
The suspect is white, in his early twenties, with shaved fair hair and clear skin.
He was carrying a large rucksack.
Investigating officer, Det Con Chris Oakman said: “I would appeal to anyone with any information, or anyone who saw a man acting suspiciously in Ulyett Place, Oldbrook, on Friday, to contact the police immediately.
“If you don’t want to speak directly to the police you can contact the independent charity Crimestoppers anonymously on 0800 555 111 or online at www.crimestoppers-uk.org. No personal details are taken, information is not traced or recorded and you will not go to court.”
If you have any information please contact the Thames Valley Police Enquiry Centre on 101.