Charlie Sheen spotted in Mexico City

American actor Charlie Sheen is visiting Mexico City, as fans revealed on social networks.

Twitter and Instagram users posted photographs along with the former star of "Two and a Half Men", who was spotted in Polanco neighborhood.

The reason for his visit to Mexico remains unknown.

Last year, the Hollywood actor revealed he is HIV-positive and that had to pay US$10m in hush money to keep his condition as a secret.