Doha, Qatar: Ministry of Interior has raised the threat level on Sunday morning, urging people to stay indoors and away from glass facades.
The Ministry also called on people to follow safety instructions and avoid unnecessary movement.
This was followed by a security threat 'eliminated' message at 5:55am.
Bahrain's Ministry of Interior also stated that air raid sirens have been activated.
"Citizens and residents are urged to remain calm and head to the nearest safe place," it said.