New Delhi: A Supreme Court panel, inquiring into the IPL spot fixing scam, has come down heavily on Mumbai police for "not willing" to investigate involvement of underworld don Dawood Ibrahim in it and for protecting "lots of persons" involved in the betting syndicate.

Probe by Mumbai Police in the scandal was sharply criticised by a three-member apex court panel headed by former Punjab and Haryana High Court Chief Justice Mukul Mudgal and raised questions on why police allowed a Pakistani umpire to leave the country when it knew about his involvement in the scam.