Published: Aug 21, 2014 11:31 AM EDT

JACKSONVILLE, Fla.- A Jacksonville Fire Department lieutenant is suing the department for gender discrimination, claiming she was punished for complaining about her male colleagues' profane comments and pornography.

According documents filed in U.S. District Court in July, Lt. Candice Buckner says she filed an internal complaint in 2012 because of persistent sexually explicit comments and pornographic materials in the firehouse.

Buckner, who was the only female on her shift, says matters worsened after her complaint, and that she was isolated by colleagues and subjected to sexually explicit comments about her and her daughter.

Department spokesman Tom Francis says Buckner's initial claims were investigated and no further action was deemed warranted. He declined further comment because it's an active case.

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