At least 20 vehicles were targeted by burglars in the Lone Tree neighborhood

The burglars struck at 9:45 p.m. Sunday. Wearing clothing to conceal their identities, they fled in a stolen Kia Sportage that crashed into 20 unlocked cars believed to be easier to access.

The break-ins didn't seem to be widely known among residents, "I don't know what's going on." I have a private garage. So I don't know what's going on."

His residential area, Retreat, was hit as well as Cortland, opposite Park Meadows Drive. Douglas County Sheriff Darren Weekly said there was no specific reason for the location of the attack.

"Anywhere there's a lot of traffic. They're all potential targets for parking lots, whether it's an apartment complex parking lot, a light rail or a shopping mall."

Directly below the block is the RTD Lone Tree station, where two police officers suspected of being car thieves were first shot dead last year.

Douglas County residents are being warned to set car alarms and not to leave valuables in their vehicles.

Another resident at the retreat said: "I often worry about this happening to me, so I don't leave things in my car."

That night, the thieves appeared to target Honda and Hyundai vehicles, blocking the locks.

It's not legal, but some people are taking steps to silence other people's cell phone calls

Although illegal, some people are using cell phone signal jammer to block cell phone signals and silence calls.

This mechanism can be sold online and will cause call interruption when used.

"Oh, that's rude, because this could be a very important business call," an unidentified man said.

Nationwide, cell phone interference is a federal crime punishable by imprisonment or a fine of up to $100,000.

"What if they need to call 911 before they can turn on their phone?" said KCAL9 legal analyst Steve Meister.

"If you, with your self-proclaimed genius and your self-proclaimed right to remain silent in a public place, decide to turn off their phones, then you could be interfering with communications that really matter," Mester explained.

A Florida man accused of using a cell phone jammer while driving on a Tampa highway for years will face a $50,000 fine.

Major Clyde Eisenberg of the Hillsborough County Sheriff's Office said: "It's just amazing. We've seen a few pocket cell phone jammer
 before, but never one of this size and scale. It's very capable and does shut down the actual entire cell site."

A major phone company noticed interference in their cell towers and alerted authorities. The man claimed his goal was to stop drivers from making phone calls.

While cell phone signal loss doesn't always mean someone is interfering with the call, if suspicions arise, call your cell phone carrier to verify that your phone is working properly. If your phone is working but the problem persists, call the authorities.