Four Chinese who were detained at the Jaisalmer border for staying illegally in the sensitive region has exposed the loopholes in the country’s security setup. The four, who were reportedly working for an oil exploration company on the India-Pakistan border, did not have any valid documents. The passports and visa papers did not reveal their address in China.

“The entire incident shows a serious security lapse and negligence of the officials including the security staff. We are conducting a thorough probe to see how it all happened,” a police officer has been quoted in the media.

The Jaisalmer police arrested them recently, after they worked for Focus Energy in Shahgarh Bulge for about 10 days.