"Any such allegations are misconceived and unfounded. I want to make it clear that necessary arrangements were made at the venue and there was no lapse in security," Bassi told reporters after the meeting on Monday.
He said the woman, who threw ink at CM Kejriwal, has been arrested under relevant provisions of the law, and investigation is underway in the matter.
When asked about Kejriwal's security, Bassi did not share details and maintained that adequate security for the CM has always been in place and it shall continue to be so.
Bhavna Arora, 26, who claimed to be the in-charge of the Punjab unit of Aam Aadmi Sena, threw ink at Kejriwal at a public rally held to celebrate the "success" of the odd-even scheme yesterday.
The incident triggered angry reactions from the Aam Aadmi Party government, which alleged a Bharatiya Janata Party conspiracy behind the attack and assailed the police for the major security lapse.
Arora, a resident of Rama Vihar in outer Delhi's Rohini sub-city, was arrested after seeking permission from a duty magistrate in view of the protocol to arrest a woman post sunset.
She was produced before a court on Monday which sent her to a one-day police custody.