New Delhi: In view of CBI's raid against Rajendra Kumar, principal secretary to the Delhi Chief Minister Arvind Kejriwal, anti-corruption crusader and social activist Anna Hazare on Wednesday pulled up the AAP supremo for not showing due diligence while appointing officials at key positions in his office.

Hazare also opined that the Centre should have taken action earlier over the alleged complaints against the official.

"This incident (alleged corruption) did not happen during the tenure of Arvind (Kejriwal). The BJP didn't do anything in the past one and a half years (about this case). Action (against Rajendra Kumar) should have been taken back then," Hazare said in Ralegan Siddhi.

The social activist cautioned Kejriwal to have people with strong character around him in view of his anti-corruption campaign.

"From the beginning, Arvind has been fighting against corruption. I have always told him that 'you should have people with strong character around you'. Before appointing someone as principal secretary, he should have checked his background," Hazare said.

Meanwhile, Kejriwal on Wednesday said that the CBI seized documents that had "no relation" to the allegations being probed against Principal Secretary Rajendra Kumar.

The CBI conducted the raid on Tuesday.