On Saturday evening, an anonymous caller warned Mumbai Police about possible serial blasts in the city, officials said on Sunday. According to a PTI report, the caller warned that there would be serial blasts across the city on Saturday evening around 6 pm. Reportedly, the anonymous caller hung up abruptly after making the claim. 

"Mumbai Police Control received a threat call on Saturday evening, around 6. The caller claimed that there would be serial blasts in Mumbai before hanging up," an official told news agency PTI.