India says it might bring its own charges against a Chicago-based businessman cleared by a U.S. court of helping plot the deadly 2008 terrorist attacks in Mumbai.

Internal Security Secretary U.K. Bansal said Friday India was “disappointed” the U.S. jury did not find 50-year-old Tahawwur Rana guilty on the Mumbai charges. He said India may press ahead with its own case against him.

U.S. jurors convicted Rana Thursday of providing material support to the Pakistani militant group Lashkar-e-Taiba, which is blamed for the siege on India's financial hub. It also found him guilty of helping to plot an attack on Denmark's Jyllands-Posten newspaper, the paper that touched off angry protests across the Muslim world when it published cartoons of the Islamic Prophet Muhammad.

But after two days of deliberations, jurors concluded there was not enough evidence to tie Rana to the Mumbai terrorist attacks, which killed 166 people.

The Pakistani-born Canadian faces 30 years in prison on the convictions. His lawyer says he will appeal the verdicts, telling reporters the jury “got it wrong.”

Indian prosecutors have been conducting their own investigation into Rana and David Coleman Headley, a Pakistani-American who has pleaded guilty to conducting surveillance for both the Danish and Mumbai plots.

Indian officials had said they were waiting for the U.S. to conclude its case against the men before proceeding with a case of their own.

U.S. prosecutors said the FBI recorded Rana and Headley discussing Mumbai attacks and possible new targets in India and Denmark.

Headley testified during the U.S. trial that he traveled to Mumbai under the pretense that he was working for Rana's immigration business.

Headley also testified that Lashkar-e-Taiba received help from Pakistani intelligence.

India has long accused Pakistan of harboring the militants who carried out the Mumbai attacks.