Noor Salman, wife of the gunman who killed 49 people at the Pulse gay nightclub in Orlando could soon be charged in connection with the mass shooting.

Media reports say a federal grand jury has been convened and could charge Salman, wife of Omar Mateen, as early as Wednesday.

Fox News said that prosecutors are seeking to charge Salman as an accessory to 49 counts of murder and 53 counts of attempted murder, failing to notify law enforcement about the coming attack and lying to federal agents.

According to a report by the Associated Press, Salman, 30, met Mateen online and they married on Sept. 29, 2011. The couple has a 3-year-old son.

Salman, who has Palestinian roots, grew up in the small suburb of Rodeo, California, about 25 miles northeast of San Francisco.

Salman feared that Mateen, 29, was planning an attack and sought to dissuade him from going forward, a federal law enforcement official said Tuesday.

In interviews with federal investigators, Salman also allegedly acknowledged driving Mateen to the Pulse nightclub at least once before her husband launched the assault, according to the official who was not authorized to speak publicly

Salman allegedly told investigators that she drove Mateen to Pulse, a popular gay club in Orlando, about a week before Sunday’s shooting, suggesting that the gunman had identified the target for some time before moving forward.

The attack, the deadliest mass shooting in U.S. history, left 49 dead and 53 others wounded. Mateen was shot dead by police after a standoff.

US President, Barrack Obama will visit Orlando on Thursday in honour of the victims.