DALLAS -- A Dallas police lieutenant whose officer husband was killed while on duty three years ago has been put on administrative leave as officials investigate her side job as local rapper Lucille Baller, who in one song threatens to shoot anyone who messes with her.Lt. Regina Smith, who oversees burglary and theft detectives for two patrol investigative units, also runs Big Rush In Llc.She started the music production company and record label after the 2009 death of her husband, Dallas Senior Cpl. Norman Smith, who was nicknamed the "Big Russian.""Don't push Ms. Lucy, because you won't like the consequences. Mess with me or I will shoot a [expletive], cuz Lucille Baller, she been to hell and back," Lt. Smith raps in a song that has since been removed from Big Rush In's website, according to The Dallas Morning News.The newspaper and WFAA-TV reported that Smith has been placed on administrative leave.Smith did not respond to requests for comment.In another video on the website, Smith is seen talking with a group of friends around a table, telling them that people in the music industry have already taken advantage of her."You know what I would do to somebody who try to take advantage of me? You see this bullet right here," Smith says, holding a bullet. "I'll stick it from their rooter to the tooter and bring it out."Smith then brings out a human silhouette target riddled with bullet holes.