Did one guy do all the shooting?
That is one of the big questions. Some survivors claim at least two shooters. According to one paper a man, 1.80 tall, dark hair, nordic looking, no police uniform, took part in the killing.
Norwegian police has not ruled out a second killer.
However, one should remember that all the witnesses are confused and shocked, and the MSM is running around like head-less chickens looking for new angles, so everything has to be taken with a grain of salt.