Marchers hold a rainbow flag with photos of the victims of the Orlando mass shooting during the San Francisco LGBT Pride Parade in San Francisco, California, June 26, 2016. REUTERS/Elijah Nouvelage

A new pro-Islamic State group video released Monday has called for attacks on San Francisco and Las Vegas, CBS Local reported. The video, which featured iconic sites of San Francisco like the Golden Gate Bridge, the Financial District and Powell Street, urged the extremist group's sympathizers to carry out attacks.

The propaganda video reportedly showed the Golden Gate Bridge with the message: “Arise, o Muslims and kill the unbelievers in their own homes.” It also praised the Orlando nightclub shooter Omar Mateen for carrying out an attack in the gay club on June 12 that left 49 people dead.

After the video was released, security analyst and former FBI agent, Jeff Harp, stated a possible reason why the Islamic State group, also known as ISIS, wanted to target San Francisco. According to Harp, the city has a large LGBT-friendly atmosphere and also recently held several Pride parade and festivities.

"San Francisco stands for a lot of things. Freedom and pride ... So it could be that they have decided to lash out at San Francisco for that," Harp said, according to CBS Local. He also said that the video may have been intended to inspire individuals like Mateen.

Mateen, the gunman involved in the worst mass shooting in modern U.S. history, called 911 and pledged allegiance to ISIS just before attacking the Pulse nightclub in Orlando, Florida. The gunman was reportedly a frequent visitor at the club, and was killed during gun battle with law enforcement officials.

California Attorney General Kamala Harris reportedly said that the government must work with Muslims in America to fight "self-radicalization."

Just days after the Orlando shooting, a purported ISIS propaganda video was released on social media threatening President Barack Obama of attacks on U.S. soil until the coalition airstrikes against the Sunni militant group in Iraq and Syria were stopped.