SHERBROOKE, Que. -- Closing arguments at the Lac-Megantic criminal trial enter their third day today as defence lawyers continue to make the case their clients should be found not guilty.

Tom Harding, Richard Labrie and Jean Demaitre have all pleaded not guilty to one count of criminal negligence causing the death of 47 people.

On July 6, 2013, a runaway train carrying crude derailed in Lac-Megantic and exploded, killing the 47 and destroying part of the downtown core.

The Crown presented its arguments Wednesday, Demaitre's lawyer was front and centre Thursday and Labrie's is expected to address the jury today.

It is unclear if Harding's attorney will come up later today or on Monday.

Harding was the train's conductor, Labrie the traffic controller and Demaitre the manager of train operations.