Authorities in the Vietnamese capital are clamping down on Internet cafes in what they say is a bid to address online gaming addiction and inappropriate content.

Internet shops within 200 metres (220 yards) of schools must shut down this month, the official Hanoi city website said late Friday.

In addition, "technical measures" should be implemented to suspend all online service to Internet shops between 11:00 pm and 6:00 am, it said.