WASHINGTON -- Let's file this under "reasons not to leave your car keys in the ignition."

Police are looking for a suspect who stole, then crashed a D.C. police cruiser in the 1600 block of Fort Davis Drive in Southeast Washington Monday afternoon. The Washington Post reports the car was left unlocked with the keys still inside.

"The vehicle should have been secured, but it was not, and the keys should not have been inside the vehicle, and they were," Commander Robert Contee of D.C.'s sixth district said.

The stolen vehicle made it just one block before crashing onto a lawn.

Reports say the unidentified police sergeant, who left his car unattended while responding to a 911 call, was formerly assigned to the auto theft unit. The 10-year police veteran could face disciplinary action.

According to the Washington Times, 18 cars are stolen every day in the Nation's Capital. The Metropolitan Police Department's own auto theft prevention fact sheet lists as tip number one: "An unlocked vehicle with a key in the ignition is an open invitation to any thief...."

Loading Slideshow...
  • Police Chase at 186 MPH

    A video obtained by police in Canada allegedly showing 25-year-old Randy George Scott of British Colombia riding a motorcycle at speeds reaching at least 186 mph.

  • 'What Is Drugs?'

    Vardan Aslanyan allegedly led police on a wild chase before asking them a profound question.

  • Man Clings To Semi During High Speed Chase

    This wild chase features a semi speeding down the highway with a man clinging to the back of the vehicle. The best part, though, is the commentary of Fox News' Shepherd Smith.

  • NY Police Chase Limo

    This Westchester County limo driver takes the police for a crazy ride.

  • Woman Exits Moving Car During Chase

    What was she thinking!?

  • 7-Year-Old Steals Car

    This little tyke told police he took the car because he didn't want to go to church.

Also on HuffPost: