New Delhi: BJP MLA O P Sharma who was caught on camera beating a CPI activist at Patiala House court on Monday, joined the probe into the assault case on Thursday, a day after he was served summons by Delhi Police.

Sharma, a first-time MLA, presented himself before the Tilak Marg police station on Thursday. The police had yesterday issued summons to him as well as three lawyers in connection with assault on journalists and JNU students and teachers at the court complex on Monday.