AIADMK deputy general secretary TTV Dinakaran was formally arrested by Delhi Police on Tuesday night after he allegedly paid bribe to a middleman to get the disputed two-leaves party symbol for his faction.Dinakaran was arrested along with his aide Mallikarjun after three days of questioning at the Chanakyapuri crime branch office.Dinakaran has been accused of paying bribe to middleman Sukesh Chandrashekhar to get the two-leaves party symbol. The dispute over the party symbol erupted after the AIADMK split into two groups following the death of party supremo and then Tamil Nadu chief minister J Jayalalithaa.Dinakaran is a leader of the VK Sasikala-led AIADMK (Amma). The other faction is O Panneerselvam’s AIADMK Puratchi Thalavi Amma.Police sources said Dinakaran was jointly interrogated with Chandrashekhar. He was quizzed about the Rs 1.3 crore found from Chandrashekhar’s hotel room in a five-star hotel in the city.Chandrashekhar, who was arrested on October 16, is learnt to have told police that he received the money from Dinakaran.Police said some amount of the money was transferred to Chandrashekhar through online banking. The role of a Chandni Chowk-based hawala trader is also being probed.Dinakaran came to Delhi on April 22 after police summoned him for interrogation. A police team had visited Chennai and served him summons.“We will probe Chandrashekhar’s claims. He had promised Dinakaran to get the symbol allotted through his contacts in the Election Commission. We are also probing the role of a retired bureaucrat of the Tamil Nadu cadre,” said an officer.