A sheriff’s office in eastern Maryland has asked residents to be on the lookout for suspicious behavior around propane-related infrastructure after two men were seen taking photos of a facility in a neighboring county.

The Worcester County Sheriff’s Office issued the notice Saturday after an employee spotted the man snapping pics at the Sharp Energy Facility Plant a day earlier in Princess Anne in Somerset County.

Authorities said two men parked their dark blue Tesla with an unknown vehicle registration at one of the facility’s side entrances and then got out with a camera.

“The driver and passenger, described as [being of] Middle Eastern descent, exited the vehicle with ‘high tech’ cameras with long lenses,” the sheriff’s office said. “They started taking pictures of the storage tanks and rail cars.”

Once the men noticed they were being watched by an employee, they hopped back in their car and drove off, police said. The sheriff’s office suggested a third person may have been in the vehicle.

Authorities advised residents to be aware of unfamiliar people loitering near propane facilities and unmarked vehicles idling near facility sites.

They also told people to be aware of unauthorized people trying to access restricted areas and to keep an eye out for “odd behavior, such as photographing, taking notes, or closely inspecting tanks or equipment.”

Police encouraged residents to contact authorities if they see any strange behavior near propane facilities.

• Matt Delaney can be reached at mdelaney@washingtontimes.com.