The United States Secret Service says at approximately 8:30 p.m. Tuesday, four people tried to climb over the outer perimeter fence, but were immediately arrested by Philadelphia police officers and Secret Service personnel.
At no point did the individuals enter the Wells Fargo Center, officials say.
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The four fence jumpers will be charged with Entering a Restricted Area.
Videos and photos posted to social media around the same time showed a number of people climbing over a fence; it is not clear at this time if these are the people being charged.
The four were taken to the Philadelphia Federal Detention Center and will be seen before a judge on Wednesday.