ndian Prime Minister Manmohan Singh said Saturday that the country must beef up intelligence gathering mechanism to tackle terrorism, reported the Indo-Asian News Service. Singh told a public gathering here in New Delhi that "the Delhi blast shows that there can be no let up in intelligence". "Security methods have been internally reviewed. We need to combat divisive forces and the radicalization of youth," he said. The Delhi High Court Wednesday came under a bomb attack which left 13 people dead and more than 90 injured.