Two people were injured in an assault in Old Bedford Road last night (May 9).
Armed police attended the scene at about 7.30pm following reports of a stabbing.
It is believed two women thought to be sex workers were involved, along with a male.
The male received a small puncture wound but there is no evidence of a knife being used, and the female had a minor bump on her head.
They were both taken to hospital with minor injuries and returned home by 11.30pm.
A Beds Police spokesperson said the offender is known to them and they are trying to locate her.
Enquiries are ongoing.