Renton Police are again warning residents to close and lock their first-floor windows at night despite the warm temperatures as burglars continue to take advantage of open windows.

Earlier this week, for example, a burglar entered an occupied home in the 900 block of Aberdeen Avenue Northeast. According to police, the unknown suspect entered through a window that was left open.

Police issued a similar warning earlier this spring for the Fairwood, North Renton and Kennydale neighborhoods and even captured a suspect they believed responsible, but now say that it is becoming a city-wide issue.

In July, for example, a burglar entered a home in the Highlands through an open front window and stole a purse off of a nightstand while the house was still occupied.

Police say the incidents appear to be quick-hit affairs, with burglars quickly grabbing something valuable and then escaping before they are noticed, often leaving larger, more expensive items behind.

Renton Police offered some ideas to help secure a home:

• A secondary lock on sliding-glass doors or a sturdy dowel in the door track or a window track, will decrease the chance a burglar will pry open a door or window.

• All exterior doors should be solid wood or metal, and fitted with deadbolt locks installed with 3-inch screws, to reduce the risk of prying.

• Window screens do not provide security, as they can easily be removed or cut.

Residents are also encouraged to meet with neighbors and be alert for any suspicious noises, vehicles or people in the neighborhood.