Lancaster is a city in both Dallas County and Ellis County, Texas (USA). As of the 2000 U.S. Census, the city population was 25,894 (though a 2007 estimate placed the city's population at 35,050). Lancaster and Cedar Hill are the only two cities in the Dallas metropolitan area that expand into Ellis County.
Lancaster is a suburb of Dallas, Texas and is part of the Best Southwest area, which includes Lancaster, Cedar Hill, DeSoto, and Duncanville. -- Wikipedia.
So says WFAA.
The Lancaster Police Department has teamed with federal agents in an ongoing federal firearms investigation.
Local officers, along with ATF, FBI, DPS, ICE and state police showed up Monday morning after spending time in the city on Saturday. Lancaster's police headquarters is being used as a base for the operation.
The U.S. Attorney's office has confirmed that investigators are working on issuing a number of warrants.
ATF officials said it is a federal firearms investigation that could lead to a number of arrests.
Authorities will not release the details of the investigation so as not to tip their hand to any suspect who may face charges.