CHONGQING, April 3 (Xinhua) -- Chinese police arrested seven suspects Monday for allegedly smuggling frozen food into the country worth more than 100 million yuan (about 16 million U.S. dollars).

In a coordinated operation in Chongqing, Guangdong and Guangxi, more than 100 police officers seized over 400 tons of smuggled food.

"With no quarantine inspection at customs and questionable refrigeration conditions in transit, smuggled food poses huge health risks," said a customs officer in Chongqing.

Cracking down on smuggled farm produces is one of the priorities of Chinese customs this year.