Hillary Clinton's campaign is refusing to disavow the father of Orlando nightclub shooter Omar Mateen, who showed up at her Kissimmee, Florida rally last night and said he was a supporter.

Seddique Mateen, whose son Omar killed 49 people at Pulse nightclub on June 12, was seen grinning as he watched the Democratic presidential nominee speak.

Today the Clinton campaign twice ignored requests for comment from Dailymail.com. The candidate was also seen blowing air kisses at the conclusion of her stop at the Borinquen Medical Center in Miami while ignoring a reporter's question on the matter.

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Seddique Mateen, the father of the Orlando nightclub shooter, has been spotted at a Hillary Clinton rally in Kissimmee, Florida. He is circled far left in the seats with a mustache

A grinning Mateen is seen giving a thumbs down alongside other Hillary Clinton supporters as they were addressed by the former first lady. Her campaign have insisted they did not know he was there

The pro-Taliban political activist, whose son Omar killed 49 people at Pulse Nightclub on June 12, sat with a smile on his face behind the Democratic presidential nominee

The former secretary of state started her address to the crowd on Monday by paying tribute to the victims of the horrific terrorist attack that shocked the world just two months ago.

She was speaking at the Osceola Heritage Park - which is just a 30 minute drive from where the worst mass shooting in American history took place.

Mateen, a pro-Taliban political activist, later said he was there because he's a member of the Democrats and had been 'invited'.

On Tuesday, a senior official in the Democratic party told DailyMail.com he wasn't invited and he was not on any of their email lists.

Mateen blended into the crowd of supporters as they listened to the former first lady talk about jobs and parts of her economic policy.

He stood alongside cheering fans holding signs reading 'Stronger Together' while wearing a red Mercedes Benz cap.

At some points he took out his cell phone and took pictures of Hillary while she was on stage.

After the event, Mateen spoke with local TV station WPTV.

He showed the station a sign he had made for Hillary, confirming that he is backing her in November.

He said: 'Hillary Clinton is good for United States versus Donald Trump, who has no solutions.

'I wished that my son joined the Army and fought ISIS. That would be much better.'

Later on in the speech, Mateen (circled) was seen taking a picture of the presidential candidate on his phone. Just a few seats to Mateen's left was a woman wearing a Pride t-shirt

Mateen seemed to blend in with the crowd by wearing a Mercedes Benz cap

Mateen then claimed he was a member of the Democratic party and had been 'invited' to the event.

Hillary Clinton is good for United States versus Donald Trump, who has no solutions Seddique Mateen, father of the Orlando nightclub shooter at a Clinton campaign event

It is not known whether he had been personally asked to attend, or had received the offer as part of an email chain.

When asked whether Clinton knew he was at the rally, he insisted: 'It's a Democratic party, so everyone can join.'

Then he was asked if those in the crowd would be surprised if he was there.

He said: 'Why should they be surprised? I love the United States, and I've been living here a long time.'

Earlier in the evening, he said he had been 'supporting the federal government' in the wake of the shootings by his son - but he would not elaborate.

The grinning Mateen watched as Clinton began her speech by showing her admiration for the Florida community in the wake of the horrifying mass murder.

'I just have to tell you how grateful I am for the leadership and the people of Orlando and Central Florida for your love and compassion,' she told the crowd.

Omar Mateen (left and right) opened fire at the nightclub in Orlando and shot 100 people, leaving 49 people dead. He was then killed when SWAT teams stormed the venue

'And I know how many people, loved ones and friends, are still grieving. And I want them to know that we will be with you.

'We will be with you as you rebuild your lives, as you rebuild hope for the future, because we can't ever let that kind of hatred and violence break the spirit, break the soul, of any place in America.'

Mateen is known for his controversial political views and video ramblings.

Mateen said he attended the event because he was supporting the Democrat. He said: 'Hillary Clinton is good for United States versus Donald Trump, who has no solutions'

Just 24 hours after his son opened fire in the gay nightclub he released a video saying: 'On the issue of homosexuality, it can be punished only by God, it is not the business of a person.

'But he (Omar) has killed those people, and I am so saddened.'

In the same footage he condemned his son's attack as the 'act of a terrorist'.

The political activist also insisted his son was not radicalized, adding: ‘He wasn’t because he had no beard, and he was just a regular person going to work and coming back and taking care of his wife and his kids.’

The father said he has no idea why the attack occurred and he didn’t notice anything irregular in his son’s behavior.

Mateen later showed off a sign he had made for Hillary to show off at the event

‘I couldn’t believe that was my son because my son got an education, he’s born in the United States in New York and he finished high school here in Florida, and he got his associate degree in criminal justice,’ he told ABC News. ‘He had a lot of love and care, and I couldn’t believe that this is what he was doing. And if he was alive I would ask him one question: Why?’

He later caused upset when he tried to palm off some of the blame for his son's attack on Pulse nightclub's security.

In the aftermath of the massacre he told Sky News: 'The first thing I want to say is that the club should have had good security. The club (with) 300 or 400 people are coming, they should have had a good security.

'My personal feeling (is) he is responsible, the club is responsible for not having good security. If there was a good communication with the security there, they could have protected much better.'

When asked whether Clinton knew he was at the rally, he insisted: 'It's a Democratic party, so everyone can join

In other videos posted online before the shooting, he expressed gratitude toward the Afghan Taliban, while denouncing the Pakistani government.

Posts include topics such as 'Rise Afghan people against Pakistan' and 'Intelligent service and Military of Pakistan real Enemy of the USA (sic)'.

In one video, the elder Mateen holds up a sign that reads: 'ISI Pakistan and Military is Destroying 14 years of US work in Afghanistan to cut AID to killers'.

And in another, according to the Washington Post, he tells the camera: 'Our brothers in Waziristan, our warrior brothers in [the] Taliban movement and national Afghan Taliban are rising up. Inshallah the Durand Line issue will be solved soon.'

The elder Mateen, who once claimed to be a candidate for president in Afghanistan, condemned his son's actions, but also said homosexuals should be punished by God

Mr Mateen came to the U.S. from Afghanistan more than 30 years ago and once described himself as its 'revolutionary president.'

Kabul-based political analyst Ahmad Saeedi said Mateen was a fierce anti-communist.

He was a captain in the ranks of the mujahedeen who fought the Soviet occupation in the 1970s and 1980s, Saeedi said.

A former Afghan official said the 'Durand Jirga Show' appears on Payam-e-Afghan, a California-based channel that supports ethnic solidarity with the Afghan Taliban, which are mostly Pashtun.

The videos are full of anti-American rhetoric and inflammatory comments.

The Clinton campaign later insisted Mateen had not been invited to the event. She is seen waving to the crowd before her speech on Monday night

Republican and former vice presidential candidate Sarah Palin was one one of the first politicians to slam his appearance. She wrote 'unbelievable' and included a link to an article

In an April 2015 video, Mateen said he and his supporters had called on the Taliban to join the peace initiative by current Afghan President Ashraf Ghani.

Mateen once had 'a brief and inconsequential meeting' with Rep. Ed Royce, the chairman of the House Foreign Affairs Committee, the California Republican said in a statement.

'Royce said he routinely meets Afghan-Americans and he vaguely recalls a discussion about relations between Afghanistan and Pakistan with Mateen.

In a video dated May 23, 2015, Mateen declared himself a candidate for the Afghan presidency.

'Afghanistan's sovereignty is in danger due to the free hand of foreigners on our territory, and the result is that 95 percent of the country is not under the government's control,' he said, a reference to the influence of Pakistan.

Pictures show the aftermath of the mass shooting at Pulse nightclub in Orlando, Florida. Broken windows show where SWAT team entered during the standoff that lasted for hours

A mourner stands alongside crosses honoring the 49 victims of the massacre on the one month anniversary

Omar Mateen, who was born in New York, gunned down revelers in the gay nightclub with a rifle he had legally purchased

Seddique's son Omar walked into Pulse nightclub in Orlando around 2am on June 12 armed with a .223-caliber AR-15-type rifle and a 9mm semi-automatic handgun that was legally purchased and began shootingat random.

He engaged in a gun battle with an off-duty police officer who was working security at Pulse, and then went deeper into the nightclub, killing a total of 49 innocent people.