Chicago: A former National Guard soldier was sentenced to 30 years in prison for his part in a thwarted plot to carry out a deadly attack against his fellow soldiers at an armoury outside of Chicago in the US.

Hasan Edmonds, 23, the former soldier, pleaded guilty, along with his 30-year-old cousin Jonas Edmonds, to conspiring to provide material support to the Islamic State (IS) terror group last year as part of a plot that included carrying out a massive attack against the post he was assigned to in Joliet, Illinois, USA Today reported on Tuesday.