A judge is holding a key hearing to determine whether a Michigan man will go to trial for random shootings that killed six people and injured two more.

Jason Dalton is accused in three separate shootings in the Kalamazoo-area in February, which authorities said he carried out between picking up riders as an Uber driver. A judge on Friday must decide whether there's enough evidence to move the case to trial court.

Police have quoted Dalton as saying a "devil figure" on Uber's app was controlling him the night of the shootings.

Six people were killed and a woman and a 14-year-old girl were injured on Feb. 20. Dalton is charged with murder and attempted murder. He's been found mentally competent to understand the charges and assist his lawyer.