A Democratic state senator has apologized after pictures were posted online of a group of supporters at his fundraiser performing a mock assassination of President Trump.

In a separate image, Sen. Martin Sandoval, 55, who represents Illinois' 11th District, was pictured standing next to one man who had constructed the simulated attack.

Images posted on social media saw one man pointing a machine gun at another person dressed in a Mexican costume wearing a Donald Trump mask.

A Democratic senator has apologized after pictures were posted online of a group of supporters at his fundraiser performing a mock assassination of President Trump

The man wearing the Trump mask appears to grab his chest and lean back as if he is imitating being shot by the man holding the gun.

The performance was reportedly acted out in front of guests at Sandoval's fundraising event, according to WCIA.

The pictures sparked outrage online and Sandoval has since released a statement apologizing for the 'unacceptable' actions of the guests at his event.

He said: 'I don't condone violence toward the President or anyone else. I apologize that something like this happened at my event.'

One of Trump's closest aides, Kellyanne Conway, brought the pictures to the attention of her followers on Sunday evening

Sandoval's event was held at the Klein Creek Golf Club in west suburban Winfield and donors paid at least $250 to attend.

Both republican and democratic supporters have weighed in on the images, including Democratic Gov. J.B. Pritzker who blasted them in a statement on Saturday.

She said: 'As our nation grapples with the epidemic of gun violence, purposely pointing a fake gun at anyone is insensitive and wrong.

The man wearing the Trump mask appears to grab his chest and lean back as if he is imitating being shot by the man holding the gun

The pictures sparked outrage online and Sandoval (pictured) has since released a statement apologizing for the 'unacceptable' actions of the guests at his event

'I condemn actions like the ones displayed in the pictures because they lack the civility our politics demands.'

One of Trump's closest aides, Kellyanne Conway, brought the pictures to the attention of her followers on Sunday evening.

She retweeted them and captioned the post: 'Every Democrat should be asked if they support or disavow this.'

Illinois Republican Party Chairman Tim Schneider, said: 'The apology from Sen. Sandoval for the detestable pictures from his event depicting an assassination of President Trump is too little, too late.'

'Dangerous imagery like this will be condemned and seen as inappropriate by people of sound mind; however, a mentally unstable individual who wants to harm President Trump might find them as an inspiration.

'It's inexcusable for an elected official to allow the promotion of violence in any way. If the individual pictured is a staffer or volunteer, they should be terminated immediately.'