Police are asking residents to be more cautious after a rash of car break-ins in New Braunfels.

New Braunfels Police Department Captain John McDonald said they have responded to at least three dozen break-ins in the last month.

"Recently, I would say in the last 30 days," said McDonald. "We've seen an increase in the residential areas that has caused some alarm and caused us to take some action."

Cynthia Watson said she has always felt safe in her neighborhood, but just a few weeks ago, someone went through her son's car.

"One weekend, our son and our daughter-in-law were here and he left his car unlocked," said Watson. "And, the next morning, he noticed that someone had rummaged through the car."

In this case, Watson said nothing was stolen.

However, that has not been the case for the last dozen break-ins happening in New Braunfels.

Captain McDonald said car thieves are getting a hold of people's laptops, GPS devices, and handguns.

Police have found in most of cases, the vehicle owners did not lock their doors.

"The criminals are actually going up in the driveway to commit the burglary," said McDonald. "So, we're letting them (residents) know to leave the porch lights on and if they have an alarm on their vehicle to activate the alarm."

McDonald also said they are taking action by increasing their presence around the neighborhoods and that they have several leads that they are following right now.