Updated

The Latest on change-of-plea hearing in case involving explosion at Louisiana National Guard facility (all times local):

4:30 p.m.

The lawyer for the last defendant in a case involving a huge explosion at Louisiana National Guard-owned site says he expects his client to plead guilty.

Donald Hathaway says he can't say more until after William Terry Wright's change-of-plea hearing, scheduled for 3 p.m. CDT Thursday.

Wright was vice president of operations at Explo Systems, which had an Army contract to "demilitarize" M6 artillery propellant.

State police began investigating Explo after a huge explosion in 2012 at Camp Minden. Explo went bankrupt in 2013, leaving thousands of tons of potentially explosive M6.

Prosecutors had said they planned to show Wright committed acts similar to those he's accused of at another company, in Kansas. And four codefendants have pleaded guilty, saying they'd testify for the prosecution. A fifth codefendant died June 2.

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3:20 p.m.

The last defendant has told a judge he'll change his plea from "not guilty" in a case involving a huge explosion at Louisiana National Guard-owned site.

An electronic court document Wednesday showed a change-of-plea hearing Thursday afternoon for William Terry Wright. He was vice president of operations at Explo Systems, which had an Army contract to "demilitarize" M6 artillery propellant.

State police began investigating Explo after a huge explosion in 2012. The company went bankrupt in 2013, leaving thousands of tons of potentially explosive M6 at Camp Minden.

Prosecutors had said they'd show that Wright also committed acts similar to those he's accused of in Louisiana at a Kansas company.

Four codefendants have pleaded guilty, agreeing to testify for prosecutors. A fifth codefendant died June 2.