Authorities are calling the attack an attempted rape.
Deputies with the Precinct 5 Constable's Office were searching for a man wearing a white tank top and blue shorts, but couldn't find anyone matching that description.
Authorities had an extensive area they had to search, George Bush Park is some 7,800 acres and the running trail is more than 11 miles. In fact it is the 6th largest park in the nation.
They are now asking for your help. If you have any information about this man you are asked to call police.
