A federal jury in Utah has adjourned for the weekend without reaching a verdict in the trial of an Illinois man accused of bombing a downtown Salt Lake City library in 2006.

Court officials said the jury went home after closing arguments Friday in the trial of Thomas Zajac. Jurors are due to return for deliberations on Monday.

The 57-year-old Zajac is fighting charges that could get him decades in prison in the September 2006 blast that damaged a library window and forced 400 people to flee. No one was injured.

Prosecutor Eric Benson told jurors Zajac was angry about his son's 2004 drunken-driving arrest by Salt Lake City police.

Defense lawyer Deirdre Gorman suggests that Zajac's son, Adam Zajac, had a better motive for the bombing than his father.