Warren County authorities are telling residents to lock their car doors.Truesdale Police Chief Andrew Huston said vehicle break-ins are happening all over Warren County, including Wright City, Warrenton and Truesdale.Huston said most of the cars that thieves hit were not locked.“This is a crime of opportunity, so many times having a locked door is a deterrent,” said Warren County Sheriff Kevin Harrison.Warrenton Police Chief Greg Houdyshell said Warrenton has seen a spike in car break-ins. He said the criminals are going car to car, checking for unlocked doors. Once inside, they take what’s visible and rummage though for anything that’s hidden.“It would be so much simpler if people would lock their car doors,” Houdyshell said. “People also need to be conscious of what they’re leaving in their cars. People are taking what’s valuable but they really want items that aren’t bulky and they can take in a hurry and turn over for a couple of bucks.”Houdyshell said in years past, suspects of these easy crimes were kids getting into end-of-summer mischief. Now they seem to be drug users looking for things to feed their habit. They want cash, loose change, and items they can sell or trade, he said.Police suggest, in addition to keeping car doors locked, that people don’t leave valuables in their cars, and definitely not where they can be seen.Also, police suggest calling 911 if residents come across a suspected car break-in.“If you see a car theft in progress, call the police. Stay on the line with the dispatcher. Tell them where you are, where they’re going. Give a description,” said Houdyshell. “Don’t try to be a hero and try to take care of the situation yourself.”If you have information about a recent car break-in, call your local police.Crime