Frankfurt, Muharram 29, 1438, October 30, 2016, SPA -- Four youths between the ages of 16 and 18 suffered stab wounds when they clashed in a Frankfurt commuter rail station Saturday, police said. Three of the young men had serious injuries, a police spokeswoman said. Police do not know what was behind the altercation, which was witnessed by a large number of onlookers. Police briefly closed Hauptwache station, the scene of the fight, in order to secure evidence. --SPA 02:33 LOCAL TIME 23:33 GMT www.spa.gov.sa/w