According to the police, complaints have been registered under various sections of the Indian Penal Code against "unknown" assailants and the Hindu Raksha Dal.
"We have registered complaints under Sections 147 (punishment for rioting) and 427 (mischief causing damage to the amount of fifty rupees) and also other Sections of IPC," a police official said.
About 30 people attacked the office of the AAP near the residence of Delhi Chief Minister Arvind Kejriwal in Ghaziabad Wednesday, shattering window panes and vandalising furniture. Police have since decided to bring the office under security cover.
