Hamza alias Sayeed Zabi ud Deen alias Zabi Ansari alias Riyasat Ali was one of the Pakistani handlers who was giving instructions to the 26/11 terrorists, according to Delhi Police sources.
They said Hamza was in Pakistan when the 26/11 attack took place.
He was also wanted in connection with some cases in Gujarat, they said.
Hamza was produced before a court which remanded him to 15 day police custody.