China called the United States "extremely irresponsible" for "groundlessly suspecting" there are information security risks in China's drone systems, its commerce ministry said on Tuesday.

A guard near B-block building inside the prison spotted the black drone, which was charged and weighed 30 to 40 gm, between 3.30 pm and 4 pm on Wednesday.

The U.S. Commerce Department is evaluating new regulations that could limit or prohibit the use of Chinese-made drones, citing national security concerns. Public comments on the proposed rules are being accepted until March 4,