[9] He then stood quietly with an illegal CZ 75B pistol in one hand in a low position by his leg.

[9] After clearing the malfunction, the perpetrator continued to shoot people in the room, aiming at victims' heads and necks, killing six adults.

A third victim in the waiting room also had law enforcement training, having left the prison service ten years prior.

The first order patrol cars are positioned so as to reach any similar incident within ten minutes anywhere in the country and thus overcome the delay needed for the arrival of a complete tactical unit.

The perpetrator drove away from the hospital in a grey Renault Laguna, at some point taking down its registration plates, possibly to avoid detection by automatic traffic cameras.

By this time, the police had arrested eight men in the hospital, its vicinity and elsewhere in Ostrava who fit the initial general description of the perpetrator, which later turned out to be completely wrong.

[8] The police sent a helicopter and ground units to the vicinity of Děhylov, where the perpetrator was supposed to be according to his mother, and found him after a while.

[8] The perpetrator's family and friends had observed his mental state gradually deteriorating over a long period of time.

[7] During one medical examination, the perpetrator's partner told the doctor to issue a request for psychiatric evaluation, claiming that he had become "impossible to live with".

The perpetrator had spent time in a psychiatric ward two years before the attack following hospitalization for tetany, which is often accompanied by depression.

The perpetrator used a CZ 75 pistol that was made about 30 years before as a non-functional cut-away replica for purposes of education and training.