Delhi BJP leaders, including Mr Tiwari, had alleged "misbehaviour and attack" by AAP legislators and "anti-social elements" at Mr Kejriwal's official residence on January 30, when they had gone there for a discussion to find a way to provide relief to traders affected by the sealing drive in the city.
In his letter to Home Minister Rajnath Singh, Mr Tiwari said he has a 'Y' category security cover, but it proved inadequate in wake of the recent incidents.
"The two incidents - West Bengal government's refusal to provide security during campaigning in the state, and the attack at Delhi Chief Minister Arvind Kejriwal's residence - are enough to prove that the existing security arrangements are not enough," he said in the letter.
The 'Z' category security detail entails 20-25 commandos covering a protectee. The cover extends to residence of the protectee who is also provided a pilot and an escort vehicle.
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