Siddharth Pithani, friend of Sushant Singh Rajput arrived at DRDO guest house in Santacruz for another round of questioning by the Central Bureau of Investigation (CBI) in connection with the death of the 'Dil Bechara' movie actor.
CBI team had also called actor's friend Rhea Chakraborty for questioning.
The actor allegedly died by suicide at his residence on June 14.
