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.

US carrying out rescue effort after losing aircraft in Iraq
One French soldier killed, 6 injured in Iraq after drone attack
Suspect shot dead after crashing truck into Detroit-area synagogue
Australia releases petrol and diesel from emergency reserves
Cuba to release 51 prisoners in Vatican-brokered deal