CONCORD, N.H. — The state’s attorney general is critical of several decisions made by undercover drug task officers in the moments leading up to an April shoot-out in which Police Chief Michael Maloney of Greenland was killed and four officers were wounded.

Attorney General Michael Delaney says the undercover ­officers obtained a no-knock warrant to search the home of 29-year-old Cullen Mutrie for drugs, but opted instead to knock on the door in hope of drawing Mutrie out.