they confirmed that lenka hlavkova the head of the university s institute of musicology was one of those shot dead. outside the university, people have been leaving flowers and candles. saturday has been declared a day of national mourning across the czech republic. in a friday morning news conference, police showed bodycam video from their officers. it shows them entering the building to find the gunman. there had been some criticism of their response, but the police said the time between receiving the first emergency call and officers stepping into the building was four minutes. police said the gunman took his own life following the attack. he s been named by local media as 24 year old student david kozak. let s get more from that news conference where prague s chief police officer gave his reaction to thursday s shooting. translation: i was there on site. i was severely impacted by and shattered to see it. and i ve been with the police force for a0 years. around 220, 2