A mountain biker has been caught on camera smashing a car window and stealing money following a spate of thefts from vehicles in the street.
The incident took place about 6.30am on Friday, February 3 in East Butterfield Court, off Lings Way.
A neighbour said a similar thing happened to him in 2008 when somebody smashed his car window and destroyed his monitor.
He now fears the same thing is happening again.
He said: "Our neighbour knocked on our door this morning, she said there was some money taken [from her car.]
"[The thief] was riding his bike up the street, you see him trying all the cars. When he got to the white car, he smashed the window and probably caused damage of around £400.
"He was a young guy."
A spokeswoman for Northamptonshire Police said: "We have had a report of a car - a white Toyota Yaris - window having been smashed in East Butterfield Court, Northampton, between 8.30pm on Wednesday, 1 March and 8.30am on Thursday, March 2.
"Cash was taken from the car and police are appealing for witnesses. Anyone who saw anything or who may have any information can contact police on 101 or Crimestoppers anonymously on 0800 111 555.