WAUPUN, Wis. (AP) — A drone that landed inside the walls of the state prison in Waupun was owned by a private citizen who lost contact with the device, according to police.

Earl Jackson called police to report that he had lost communication with the drone that he was flying in his front yard about 12:30 a.m. Monday, Waupun Police Chief Dale Heeringa said. Since he lives about a block from the Waupun Correctional Institution, Jackson told authorities said he was concerned it might wind up at the prison.

“He was right. It did land behind the prison walls,” Heeringa said.

Law enforcement is increasingly concerned about the safety and security when it comes to unmanned aerial vehicles, or UAVs.

“Drones are increasing in popularity and I read somewhere that many thousands of them were given as Christmas gifts,” Heeringa said. “I see this as causing ongoing problems in the future.”

The city does not have any ordinances dealing with drone operation, although Heeringa said at least two Wisconsin legislators are working on a proposed state bill.

The spider-like, motorized drones are commonly designed to carry a camera or video camera. As prices for the devices have come down in the last year, more people are buying drones for aerial photos, among other things.

The drones could cause security breaches as well as concerns about dropping contraband for inmates inside the prison, Heeringa said. There have been several arrests in the past year across the U.S. when people tried smuggling contraband into prisons by using drones. Waupun has three correctional facilities within city limits.

Jackson had registered the device with the Federal Aviation Administration. Heeringa said police are still investigating the incident, but realize there was no intention of illegal activity or deception in Monday’s incident

Prison staff located the drone after searching for about an hour. It was returned to it the owner.