The Central Bureau of Investigation has sound grounds to appeal in the Delhi High Court against the acquittal of Congress leader Sajjan Kumar in a 1984 anti-Sikh riots case, said a senior officer here on Tuesday.

While five of the accused were convicted in the case, Mr. Kumar was acquitted by the Sessions Court of all charges in the murder of five Sikhs in the Raj Nagar area of Delhi Cantonment in 1984.

During the arguments in the case, the CBI had alleged that there was a conspiracy of “terrifying proportions” between the Delhi Police and Sajjan Kumar.

The agency also plans to expedite its investigation in another anti-Sikh riot case reported from Nangloi, said the officer. Sajjan Kumar is one of the suspects in that case also.