The Island County Sheriff’s Office is warning Whidbey residents to watch out for as much as $150,000 in counterfeit bills, which may make their way onto the island in the “next week or two.”

The office announced the warning Thursday on its Facebook page.

“To clarify, we have not confirmed the validity of the information,” the alert said. “We are providing this information for public awareness at this time.”

The funny money may total up to $150,000, police say, but they have few details about the bills, such as their denominations or quality. Merchants should check each bill carefully, the alert said.

For information on what to do if a counterfeit note is suspected, visit http://content.govdelivery.com/bulletins/gd/WACOISLAND-169a2c3.