NEW ORLEANS -- A former engineer with the oil energy company BP is set for a change-of-plea hearing in a long-running federal case related to the 2010 Gulf of Mexico oil spill.

Kurt Mix is scheduled for a Friday morning hearing before U.S. District Judge Stanwood Duval in New Orleans. He is currently charged with obstruction of justice and has pleaded not guilty.

Prosecutors say he deleted text messages to a supervisor regarding the amount of oil flowing from the site where the Deepwater Horizon offshore oil rig exploded.

His attorneys have long argued that there was ample evidence he shared information about the flow rate at the well site throughout the government investigation.