Issuing the order, Defence Minister Prawit Wongsuwon said that surveillance had begun earlier after the two visitor groups were found involved in passport forgery.
Immigration police and other security agencies were monitoring the aliens, the minister was quoted as saying by the Bangkok Post.
"We have two theories. They may have snuck into Thailand to have their fake passports done so that they can travel to another country. Or they may have arrived for terror attacks," Gen Prawit said.
The two suspects, however, denied the charges.
The blast at the temple was one of the most deadly acts of violence in Bangkok in decades.
The Military Court has set April 20-22 for the inspection of the evidence, the report said.
Chechens are a Caucasian ethnic group in the North Caucasus region of Western Asia. The southern Russian republic of Chechnya has long been a boiling point for conflict with Moscow in the restive North Caucasus.
You’ve reached your limit of {{free_limit}} free articles this month.
Subscribe now for unlimited access.
Already subscribed? Log in
Subscribe to read the full story →
Smart Quarterly
₹900
3 Months
₹300/Month
Smart Essential
₹2,700
1 Year
₹225/Month
Super Saver
₹3,900
2 Years
₹162/Month
Renews automatically, cancel anytime
Here’s what’s included in our digital subscription plans
Exclusive premium stories online
Over 30 premium stories daily, handpicked by our editors


Complimentary Access to The New York Times
News, Games, Cooking, Audio, Wirecutter & The Athletic
Business Standard Epaper
Digital replica of our daily newspaper — with options to read, save, and share


Curated Newsletters
Insights on markets, finance, politics, tech, and more delivered to your inbox
Market Analysis & Investment Insights
In-depth market analysis & insights with access to The Smart Investor


Archives
Repository of articles and publications dating back to 1997
Ad-free Reading
Uninterrupted reading experience with no advertisements


Seamless Access Across All Devices
Access Business Standard across devices — mobile, tablet, or PC, via web or app
