Amsterdam,netherlands-april 17, 2015: Dutch police officer in the steets of Amsterdam

Five men have been arrested in Rotterdam and Germany on charges of preparing a terrorist attack, broadcaster NOS said on Saturday. Four were arrested early on Saturday morning at homes in the centre and east of the port city and the fifth man was picked up later in the day in Germany on the request of the Dutch authorities. The first four are aged 20 to 30 and have a ‘non-western’ background, broadcaster NOS said. One is said to be a Syrian refugee with residency status named as Saleh H. A second man is said to be an Egyptian national.