May 8 (UPI) -- A female employee at Warsaw University in Poland was killed and a second worker was seriously injured by an ax-wielding intruder. Police said they had detained a 22-year-old man who is Polish. The attack on the campus of the university in the capital occurred at around 6:40 p.m. local time Wednesday evening, the Warsaw Police Department said in a post on X . "A man entered the University of Warsaw Campus and attacked the people there with an axe. He is a 22-year-old Polish