OTTAWA — Ottawa Police Chief Dennis Butler is asking you to lock your house doors and windows at night and your vehicles anytime you’re away from them. Burglars walked into at least four unlocked houses in Ottawa this weekend and stole items while the families were asleep, he said. Burglars have also helped themselves to items including a laptop computer in unlocked cars all over the city for the last few months, he said. Hide any valuables in your vehicle when you park I, he said. He also asks that if you see something suspicious or out of the ordinary, to call 911.