A string of bomb hoax calls on Sunday kept the Delhi police on their toes a day after the serial blasts killed 59 people and injured over 200 others.
A phone call that a bomb had been kept in a school for the visually challenged in Nizamuddin area in south Delhi sent police into a tizzy.
The building was evacuated but no suspicious object was found when bomb and dog squads scourged the place.
Another call was received about an unclaimed bag in a bus in Sarojini Nagar area but that also turned out to be a hoax.
Several more such calls were received from various parts of the city, police sources said.
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