'El Chapo' appears to be in photo tweeted by fugutive's son

The son of the world's most wanted man may have tweeted a clue to the fugitive's whereabouts.

A photo appears to show the son of Joaquin "El Chapo" Guzman sitting with two men whose faces are covered by oversized emojis. One of those men resembles "El Chapo."

The location tag on the photo says Costa Rica. Authorities in that country think the photo tag actually refers to a town in Mexico called Costa Rica.

Guzman is a Mexican drug lord who escaped from prison nearly two months ago.