Spanish officials say a man went on a stabbing rampage at his apartment building, killing three people and seriously injuring at least two others.
An Interior Ministry official says the suspect left his upper floor apartment in the eastern city of Valencia late Friday and went downstairs knocking on doors at random as he descended.
The occupants of one apartment opened the door and the unnamed suspect knifed and killed a man aged 50 and his 13-year-old son. He also seriously injured the man's 48-year-old wife.
The official also said Saturday on customary condition of anonymity that elsewhere in the building, a 77-year-old woman was stabbed to death and a 44-year-old man was seriously injured. The man has been arrested, but a motive for the attack hasn't been given.