Two armed men are arrested for driving from Virginia to Philadelphia in a Hummer and 'planning to attack convention center' where ballots are still being counted

Philadelphia police have arrested two men who were allegedly involved in a plot to attack the Pennsylvania Convention Center on Thursday night.

Police were tipped off, possibly from a concerned family member of one of the men, who had driven the 300 miles from Virginia in a Hummer.

It's thought the plan was to possibly carry out an attack at the convention center where votes from the election are still being counted.

Two men were arrested after driving from Virginia in a Hummer to the Pennsylvania Convention Center

Police were tipped off, possibly from a concerned family member of one of the men, who had driven the 300 miles from Virginia in a Hummer

Police have taken both men into custody during which point a weapon was found according to 6ABC.

Inside the Convention Center, workers have been tallying hundreds of thousands of votes cast by Philadelphia residents.

In Philadelphia, 358,644 absentee and mail-in ballots have been returned so far. 84 percent of those have been counted, and 58,642 more need to be counted.

Pennsylvania is among a handful of battleground states Trump and Biden are narrowly contesting as they seek the 270 electoral votes needed to win the presidency. 

Trump, who held a 675,000-vote lead early Wednesday, prematurely declared victory in the state. 

One of the men was caught on camera  as he was arrested by Philadelphia police

It's believed a weapon was found when the men were being placed under arrest

There was a high police presence outside the convention center

'We're winning Pennsylvania by a tremendous amount. We're up 690,000 votes in Pennsylvania. These aren't even close. It's not like, 'Oh, it's close,' ' Trump said during an appearance at the White House.

But by early Friday morning his lead had slipped to about 22,000 votes, as mail-in ballots from across the state continued to be counted. The late counted ballots were overwhelmingly in Biden's favor.  

One reason for the tightening race: Under state law, elections officials are not allowed to process mail-in ballots until Election Day. It's a form of voting that has skewed heavily in Biden's favor after Trump spent months claiming - without proof - that voting by mail would lead to widespread voter fraud.

There's a possibility the race won't be decided for days. If there is less than a half percentage point difference between Biden and Trump's vote total, state law dictates that a recount must be held.

Supporter of President Donald Trump demonstrate outside the Pennsylvania Convention Center where votes are being counted on Thursday in Philadelphia

Red, white and blue balloons are seen from supporters of both parties in Philadelphia 

Democrats had long considered Pennsylvania a part of their 'blue wall' - a trifecta that also includes Wisconsin and Michigan - that for years had served as a bulwark in presidential elections. In 2016, Trump won each by less than a percentage point.

Biden, who was born in Scranton, claims favorite-son status in the state and has long played up the idea that he was Pennsylvania's 'third senator' during his decades representing neighboring Delaware.

He's also campaigned extensively in the state from his home in Delaware.

Demonstrators are making themselves heard outside, but inside the Convention Center, workers have been tallying hundreds of thousands of votes cast by Philadelphia residents

A person holds a sign referring to the number of electoral votes needed to win the presidency while demonstrating outside the Pennsylvania Convention Center

Former Florida Attorney General Pam Bondi speaks about a court order granting President Donald Trump's campaign more access to vote counting operations at the Pennsylvania Convention Center. At left is Trump campaign advisor Corey Lewandowski