The probe has intensified with regard to the recent Delhi minor IED blast that occurred near the Israel embassy. Top cops along with Commissioner of Police will be at the special cell today for further investigation of this case. This includes the Teams of the National Investigation Agency (NIA), the Delhi Police Special Branch, the Anti-Terror Squad, among others. Investigations have revealed that a letter recovered from the incident site directs eyes towards an Iranian hand behind the blast. A team of 6-7 NIA officers have reached the blast site near Israeli embassy for further probe into the explosion. Watch!