A federal judge has blocked the $6.2 billion merger between local television giants Nexstar Media Group and Tegna until an antitrust lawsuit is resolved.

A federal judge has blocked the $6.2 billion merger between local television giants Nexstar Media Group and Tegna until an antitrust lawsuit is resolved.

Nexstar will appeal a judge's ruling halting its acquisition of rival broadcaster Tegna, as antitrust challenges from DirecTV and a group of states proceed.