16 foreigners have been arrested in China for using drugs.
They were detained in Jiangsu province after testing positive for substances that are banned in the country.
The suspects include teachers and students from an international language school called Education First.
At lease four the 16 foreigners are British nationals.

Powerful quake hits southern Japan, deaths feared in shopping mall explosion
France braces for fourth major heatwave, Macron calls situation 'severe'
Trump says US and Tehran having 'good, friendly talks'
Israel to allow international force into Gaza, Israeli official says
Russian attacks in eastern Ukraine kill seven, officials say
