A mountain bike and cash were stolen from a house in West Glebe Road, Corby, in the early hours of Tuesday, June 21.
An offender entered the property between 12.05am and 3.15am and searched it before making off with cash.
They then searched the garage and stole a white, green and black Trek mountain bike.
Officers would like to speak to anyone who witnessed the incident or who may have any information about it.
They would also like to speak to anyone who may have been offered the bike for sale.
Witnesses or anyone with information about the incident can contact police on 101 or Crimestoppers anonymously on 0800 555111.