LOS ANGELES, United States (AFP) — The widow of Orlando nightclub shooter Omar Mateen will face two charges, one related to terrorism and one for obstruction of justice, according to a federal indictment unsealed Tuesday.

The two-count indictment states that Noor Salman aided and abetted her husband’s attempt to provide material support to a foreign terrorist organization, namely the Islamic State group.

She is also charged with obstruction of justice for allegedly misleading local police in Florida and the Federal Bureau of Investigation on information relating to the attack last year.

Forty-nine people died in Mateen’s assault on the Pulse gay nightclub on June 12, 2016, the deadliest mass shooting in modern US history.

Media reports have said that Salman may have had prior knowledge of his plan to carry out the massacre as she had accompanied her husband on at least one trip to the nightclub and on one occasion went with him to buy ammunition.

The indictment, which was returned in Florida on January 12, asks that Salman’s assets, including $30,500, be forfeited.

Salman was due to appear in federal court in Oakland, California, on Tuesday and her case was expected to be transferred to Florida.

She was taken into custody early Monday in Rodeo, a community about 25 miles (40 kilometres) northeast of San Francisco.