Aam Aadmi Party (AAP) legislator Somnath Bharti was arrested on on charges of damaging AIIMS property and misbehaving with its security guards, the police said.
Bharti was arrested from his residence and was taken to the Hauz Khas Police Station.
The Delhi Police had registered an FIR against Bharti and his supporters on September 11 following the complaint of All India Institute of Medical Sciences' (AAIMS) Chief Security Officer R.S. Rawat.
Rawat, in his written complaint said that Bharti, around 9.45 a.m. on September 9 "provoked the mob to damage the fence of government property (AIIMS)".
Rawat had further alleged that Bharti gave permission to unauthorised persons with JCB machines to get access inside AIIMS from Gautam Nagar Nallah road side and misbehaved with security personnel.
In the complaint, it was also alleged that six security personnel were injured while trying to intervene and stop Bharti and his supporters from damaging AIIMS property.
Bharti and his supporters were booked under Sections 147 (rioting), 148 (rioting, armed with deadly weapons), 186 (obstructing public servant), 353 (assault or criminal force to deter public servant) of Indian Penal Code (IPC) and Prevention of Damage to Public Property Act.
Bharti, however, had termed the allegations "wrong".