New Delhi: BJP on Friday said Prime Minister Manmohan Singh`s attack on their party`s prime ministerial candidate Narendra Modi was "laughable". "He (Manmohan Singh) said Narendra Modi becoming prime minister would be disastrous. I want to say Modi in his tenure has made Gujarat a model state...," Bharatiya Janata Party (BJP) President Rajnath Singh said. "Such a a comment on him (Modi) is laughable," he said. "Whatever happened in 2002 is sad, but when SIT (Special Investigation Team) and court have given him a clean chit, such statement is unfortunate," he added.