Polish police detained a 22-year-old man after an axe-wielding intruder killed a female employee at the University of Warsaw and seriously injured a security guard who came to her aid.

A female staffer at the University of Warsaw in Poland was murdered in a grisly axe attack on campus, according to the BBC. The staffer, a 53-year-old porter, came "under attack in the main campus building on" the evening of May 7,