The incident happened at Wangfu Town Central Primary School in Wuzhou city, Guangxi Zhuang Autonomous Region.

At least one metro station in the vicinity of the building, which is close to Notre-Dame cathedral and other major tourist attractions, was closed.

The incident occurred around 7.30 p.m when some locals informed the police about a stabbing incident at DDA Colony at west Delhi's Khyala.

Knife attacks by disgruntled people in public places and schools to highlight their grievances periodically occur in China.

The attacker, said to be an Afghan national, was later arrested by the police.

France remains on high alert after a string of jihadist attacks since 2015 that have claimed the lives of more than 240 victims.

The incident took place at around 6:10 pm local time, the department said, without providing further details.