An international burglary ring is suspected of using high-tech equipment to spy on expensive homes.

A search of the suspects vehicles revealed cameras disguised with leaves.

Police say the burglary ring secretly installed hidden cameras outside homes so they could tell when the homeowners were away.

In another incident, police arrested two men who they say threw Wi-Fi jammers from their cars. Wi-Fi signal jammer are used to disrupt home security systems like Ring cameras.

The same person was arrested in both incidents.

All of the men are from Colombia. They are suspected of traveling to the U.S. on what authorities call "burglary tourism."

A couple has gone public with their security cameras saying they missed a burglar entering their home through a second-floor bedroom window because a Wi-Fi jammer disabled the security system.

"We learned from detectives that they installed Wi-Fi jammers that cut off the signal to the Ring cameras," Mytien Goldberg told Inside Edition.

"My cameras went offline around 9:30 p.m., and then they left the front of the house at 10:16 p.m.," Ala Tabatabai said.

The couples home was vandalized when the thieves dragged a heavy safe that had been bolted to a closet out of the house.

"[Wi-Fi jammers] can disrupt any wireless system, including Wi-Fi, Bluetooth and radio frequencies," Officer Vahe Abramyan told Inside Edition. Abramyan said a single jammer could disrupt wireless systems for an entire neighborhood.

Federal law prohibits the sale and use of Wi-Fi jammers, but people buy them online and overseas.