Delhi Chief Minister Arvind Kejriwal had chilli powder thrown at him at the Delhi Secretariat on Tuesday. The Aam Aadmi Party chief's spectacles were also broken during the attack.
The attack took place on the third floor outside Kejriwal's chambers as he was leaving for lunch.
The accused has been identified as Anil Kumar and is currently under police custody. Reports state that he is a resident of Naraina area in Delhi.
Aam Aadmi Party has blamed the Central government for the lapse in security.