BEIJING, Jan. 28 -- Chinese police have arrested a group of 14 suspects for producing and selling drugs, the Ministry of Public Security revealed on Wednesday.

Police also seized 240 kilograms of ketamine and six tonnes of raw materials for manufacturing the narcotic, the ministry said.

The ring produced the drugs in provinces of Henan and Shandong before selling them in Guangdong Province, police said.

Further investigations are underway.