The Associated Press reported that hamburger chains Jack-In-the-Box and In-N-Out, as well more than 150 school districts around the nation, have banned meat from a Chino, California slaughterhouse after a video showed workers brutalizing sick and crippled cows. School districts in at least 11 states have stopped using ground beef from Hallmark Meat Packing Co. and its associated Westland Meat Co. until a federal investigation is complete.

Jack in the Box, which has restaurants in 18 states, told its meat suppliers not to use Hallmark until further notice. The San Diego-based company does not purchase meat directly from slaughterhouses, so it was unclear whether it had used any Hallmark meat, she said. In-N-Out, an Irvine-based chain, also halted use of the beef, saying it would never condone the inhumane treatment of animals. McDonald’s, the world’s largest fast-food chain, said it does not do business with the slaughterhouse. Burger King, based in Miami, said it does not buy beef from the packing house and has no connection to the supplier.