Police say they want to speak to two youths seen running away from an arson attack in Corby.
Fire crews were called to two cars ablaze in Butterwick Road on Sunday.
About 45 minutes later another vehicle was set alight on Finland Way.
Witnesses or anyone with information about this incident is asked to contact police on 101 or Crimestoppers anonymously on 0800 111 555. Alternatively you can fill out the anonymous online form at www.crimestoppers-uk.org