Police cordoned off the area at about 13:15 GMT and a bomb disposal unit was called in.
"They have the whole area cordoned off". French media reported that about 40 vans of riot police were in position near the site.
Police, some in riot gear, quickly cordoned off the area, and the protesters left after about 30 minutes.
Officers cordoned off the blast area but after a delay of about an hour allowed the match to begin between the Bangalore Royal Challenge and the Mumbai Indians.
A virus hits downtown Atlanta, so a neighborhood containing about 4,000 exposed people has to be cordoned off.
A fierce firefight erupted with the remaining insurgents as about 200 American and Afghan Army forces cordoned off the area and pounded the compound with heavy machinegun fire.
Yesterday, about 15,000 square feet of the Morgan building had been cordoned off.
With solid information about the raid still scarce and a large area still cordoned off, the tweet was shared thousands of times in a matter of minutes.
