Police in Germany have shot dead a man who attacked another resident with a knife in a refugee shelter.
German news agency dpa reported that the 29-year-old was angry at a younger man who he believed had abused his daughter.
Dpa said the attack happened late on Tuesday as police were arresting the 27-year-old alleged abuser in the refugee shelter in the centre of the capital, Berlin.
The head of the German Police Union, Bodo Pfalzgraf, said on Wednesday that the incident was "tragic" but urged the media not to jump to conclusions about the police officers' actions.
He said officers were bound to "prevent vigilantism and a situation that threatens their own lives".