Police said on Wednesday they had detained a 22-year-old Polish man after he killed one person with an axe at Warsaw University, in an attack the institution described as a "huge tragedy".

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

A woman has been killed and a man has been severely injured in an axe attack at the University of Warsaw on Wednesday, according to Polish police. A 22-year-old Polish man has been arrested in connection with the attack which the university has called a "huge tragedy".