ZAGREB, July 23 -- The northeastern Croatian town of Daruvar has declared Wednesday a day of mourning after six residents of a local nursing home were shot dead by a gunman on Monday morning, the town administration announced Tuesday.

A retired military police officer broke into the nursing home on Monday morning and started shooting from a handgun, killing five persons on the spot, while one of the injured persons later died in hospital. The gunman's mother was among those killed.

The man was arrested shortly after his killing spree and is in police custody. The motive for the assault was not immediately clear.

  - Xinhua