SAN ANTONIO -

A Harris County Precinct 4 Deputy Constable was charged with aggravated sexual assault of a child in Bexar County Tuesday, sheriff's deputies there said.

In December 2011, Bexar County deputies received a report from someone saying Gerardo Hernandez, 41, sexually assaulted a child in 2002. After a nearly nine month investigation by the sheriff's office, a Bexar County grand jury indicted Hernandez Tuesday.

Hernandez has been employed by Harris County since October 11, 2008. As of Tuesday night he was in the Harris County jail waiting to be extradited to Bexar County.