Washington (CNN) President Donald Trump's reelection campaign sparred with local Minneapolis officials this week when a local arena threatened to bar the campaign from holding a rally if they did not pay a $530,000 bill -- a fee that was passed on by the city for security services, among other costs.

When the Trump campaign threatened to sue over the bill, the arena eventually withdrew the request. However, the city's mayor maintains that the campaign still owes them money.

Minneapolis isn't the only city claiming that the Trump campaign has stiffed them for providing city services at their events.

The Trump campaign still has outstanding invoices from at least six cities related to city services, primarily security, provided during campaign rallies.

The Center for Public Integrity reported in June that at least 10 cities had not had invoices paid for more than $841,000 in services related to public safety costs for Trump campaign rallies. CNN has found that at least six of those cities still have outstanding invoices:

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