Days after quizzing Sunanda Pushkar's son Shiv Menon in connection with her mysterious death, Delhi Police's special investigation team is likely to further question former Union minister Shashi Tharoor and his staff.

"As I had told you earlier we had recorded the statement of Shiv Menon. We have got some information from the SIT which was analysing the statement and regarding that we need to question Tharoor and other members (staff, Tharoor's other employees)," Delhi Police Commissioner B S Bassi told reporters today.

"Very soon, I think by Wednesday the team is likely to question them again," he said. "The DCP (South) has to supervise the (Delhi) poll counting, so if needed, on Wednesday or Thursday they will be questioned further."

Menon was questioned by the SIT on February 5 till late evening that day. Police sources said that Menon was asked how the relationship was between Tharoor and his wife Sunanda.

The police team has questioned at least 15 people in this connection. Tharoor, his staff members and his friends among those questioned.