After a man attacked Delhi CM Arvind Kejriwal with red chilli powder inside Delhi Secretariat on Tuesday, Delhi Police said, "Probe is underway whether it was an attack or the powder fell unintentionally." "Amazing that @DelhiPolice is investigating whether 'it was an attack or powder fell unintentionally' when the CCTV footage clearly shows it's an attack," AAP leader Atishi tweeted.