Security at the domestic and international terminals of the Chhatrapati Shivaji airport in Mumbai was tightened as a precautionary measure following the two explosions in the city.

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"Following a review of the security arrangements, we have decided to ban the entry of visitors into the buildings and strict vigil is being maintained," airport director Sudhir Kumar said.

However, the airport continues to function as usual.

The ban on entry of visitors, which was imposed for nearly a week during the Independence Day celebrations, was lifted recently.