Manhunt for suspect who lived nextdoor to bar where shooting occurred on Friday morning at about 10.30am

Four people were killed on Friday in a shooting at a Montana bar, prompting a lockdown in a neighborhood several miles away as authorities searched a wooded area for a suspect in the case.

The shooting brought the number of mass murders so far this year in the US to nine, according to the Gun Violence Archive, a non-partisan resource which defines such cases as killings in which four or more victims are killed.

Associated Press contributed reporting