The police found another message scribbled in the washroom of Mumbai Airport Terminal 1A warning of a terror attack by the Islamic State on January 26, Republic Day, on Thursday.
The house cleaning staff which spotted the message in the arrival area alerted the police on Thursday evening.
The matter is being probed by the Central Industrial Security Force.
An alert had been sounded on January 7 at the Mumbai international airport in Mumbai after a similar message scribbled on a wall of a washroom of the airport premises threatened of an attack.
The message "ATTACK BY ISIS DATE 10/01/15" had been found written on the wall of a washroom at the Level 2 of Terminal 2 of the Chhatrapati Shivaji International Airport.
