Thailand's army is deploying thousands of troops and police officers across Bangkok to stop protesters from gathering to rally against the country's May 22 coup.
Authorities also closed several subway and elevated train stations at key intersections in the city on Sunday, advising commuters that services had been suspended temporarily "for your safety due to a situation outside."
The army seized power late last month, claiming it had to restore order after seven months of demonstrations against the now-ousted government that had triggered sporadic violence.
Since the coup, pro-democracy protesters have come out on the streets nearly every day, marching through Bangkok and scuffling with soldiers.
No injuries have been reported, but the junta has warned them to stop and there are rising fears the military will start employing force.