Maine mass killing suspect had mental health issues, purchased guns legally, authorities say

Bre Allard, accompanied by her children Lucy, 5, and Zeke, 8, plant crosses Saturday, in honor of the victims of this week’s mass shooting in Lewiston, Maine. The residents of Lewiston are embarking on a path to healing after a man suspected of killing several people earlier this week was found dead. (AP Photo/Matt Rourke)

LEWISTON, Maine — Police missed two clear opportunities to end a dragnet that locked down and terrified Maine’s second-largest city after a gunman killed 18 people at a bowling alley and a bar following a recent spiral into paranoia.