Panama's capital city on Thursday banned Carnival revelers from wearing masks or costumes that conceal their faces, which officials fear could serve as a disguise for criminals.

A municipal decree in Panama City said it is forbidden to wear masks or facial make-up "covering the entire face, or wigs that modify the physical features."

The ordinance is in effect during the entirety of the city's annual celebration, held this year from February 14 to 17.

Violators face possible arrest or a fine of up to $1,500, said the decree signed by Panama City Mayor Jose Blandon.

Officials — who in past years have put similar rules in place — said revelers clad in "priestly attire" also will be banned, to avoid any chance that they could be mistaken for a real man of the cloth.

Also off limits are costumes of public safety workers, such as police officers and firefighters.