Survivors of Sweden's worst mass shooting on Wednesday recalled trying to save the lives of their comrades at a school for adults in Örebro, a day after a gunman killed 11 people on what the prime minister called a "dark day" in the country's history.

Swedish police said they were still investigating the motive behind the country's deadliest mass shooting, as local media began reporting details about the gunman. The suspect, named in reports as 35-year-old local man Rickard Andersson,

Sweden does not allow just anyone to own a gun, so how did Wednesday's tragedy occur? Eleven people were killed in Orebro at a school for adult learners, Risbergska Adult Education Center. Reuters reported that six others were wounded and required treatment at a hospital.