A Douglas County jury was unable to reach a verdict in the case of a Kansas City, Mo., man accused of taking part in a robbery last year in Lawrence.

Friday morning, District Judge Sally Pokorny declared a mistrial and scheduled a new trial for Matthew Thomas Garren, 30, to begin June 1.

During the trial that begin Tuesday, prosecutors accused Garren of pointing a gun at the back of a 20-year-old Lawrence man’s head the night of Jan. 19, 2010, during a robbery in a van near 15th Street and Haskell Avenue. He also faces aggravated robbery and conspiracy charges.

Ronald Broschart, 23, already has entered a plea in the case and was sentenced to serve 44 months in prison.

Garren testified that Broschart threatened him with a gun to come with him during the robbery.

Jurors deliberated for several hours Thursday and Friday morning before telling Pokorny they were deadlocked.