Pakistan on Wedenesday ruled out giving India access to Lashkar-e-Toiba commander Zakiur Rehman Lakhwi, who is alleged to be behind the Mumbai terror strikes, saying questioning could be done only

by Pakistani authorities to ascertain whether he had any link to the attacks.

Pakistan Defence Minister Chaudhary Ahmed Mukhtar said India's "concerns" can be discussed through a joint investigation mechanism which Islamabad has proposed to be set up to probe the Mumbai attacks.