Authorities believe the incident was crime-related and not an act of terrorism
shooting
In an attempt to escape the gunfire, some students climbed out of the windows and sat on the ledge, but one of the girls could not hold on and fell, becoming the fourth victim of the attack
A person of interest has been identified, Lewiston Police officials said
The victim is of Albanian origin
It was gang-related violence
One of the wounded was an Albanian who had been arrested in the past for drugs
The criminal tried to rob a bank earlier
Moldova's Newsmaker website cited unnamed officials saying the man had seized a gun from a border police officer after being taken to an area to be barred entry
The man was arrested by police
It comes after a boy killed nine people at a Belgrade school on Wednesday, Serbia's worst shooting in years