Czech authorities sought a motive Friday in a student's gun attack that killed 14 people at a Prague university, where tearful mourners have left a sea of candles to grieve for the dead.
The gunfire Thursday at the Charles University's Faculty of Arts sparked frantic scenes of students running from the attack that was the Czech Republic's worst shooting in decades.
A makeshift memorial of hundreds of candles flickered outside the university on Friday as police pursued the investigation at the campus in Prague's historic center.
The gunman, a 24-year-old student, died Thursday during the attack, after shooting dead 14 people and wounding 25 others.
"Thirteen out of the 14 victims of this insane massacre have been identified," Interior Minister Vit Rakusan told Czech Radio.
He added three of the wounded were foreigners. The Dutch foreign ministry said earlier one of them was a Dutch national.
All the victims were killed inside the building, and at least some were the gunman's fellow students.
Rakusan had said earlier that there was no link between the shooting and "international terrorism" and that the student acted on his own.
Although police said there was no longer any imminent threat, they were still guarding selected sites including schools on Friday as a preventive measure and "a signal we are here."
The government has declared a national day of mourning on Saturday, with flags on official buildings to be flown at half-staff and people asked to observe a minute's silence at noon.
'Huge arsenal'
The gunman, previously unknown to the police, had a "huge arsenal of weapons and ammunition," Police Chief Martin Vondrasek said after the killings on Thursday.
Police had started a search for the student even before the mass shooting, after his father was found dead in the village of Hostoun west of Prague.
The gunman "left for Prague saying he wanted to kill himself," Vondrasek said, declining to confirm whether the gunman had actually killed his father.
Police had started the search at a Faculty of Arts building where the gunman was expected to show up for a lecture, but he went instead to the faculty's main building nearby.
Police learned about the shooting at around 1400 GMT and sent a rapid response unit to the scene. Twenty minutes later, the gunman was dead.
Citing an inquiry into the student's social media activities, Vondrasek said the gunman was inspired by a "similar case that happened in Russia," without providing further details.
Vondrasek said police believed the same gunman had also killed a young man and his two-month-old daughter in a pram during a walk in a forest on the eastern outskirts of Prague on 15 December.
The investigation into those murders, which had shocked Prague, had stalled until evidence found in Hostoun linked the gunman with the crime.
