Delhi Chief Minister Arvind Kejriwal will be questioned by the police on Friday in connection with the alleged assault on chief secretary Anshu Prakash in February, police said on Wednesday.
A senior police officer said a notice had been sent to Kejriwal and he would be examined on May 18 at 11 am.
Last month, his private secretary Bibhav Kumar was also questioned in connection with the case.
Police have already questioned the 11 MLAs who were present at the chief minister's residence for the meeting on February 19 in which Prakash was allegedly attacked.
Kejriwal, his former adviser VK Jain and Deputy Chief Minister Manish Sisodia were also present there. On February 23, a police team had examined the CCTV system installed at the chief minister's residence in the Civil Lines area and seized the hard disk. The forensic report on the hard disk is still awaited.
The alleged assault on the chief secretary had triggered a bitter tussle between the Delhi government and its bureaucracy.