This week, a man accused in an alleged plot to assassinate President Donald Trump last September will stand trial in Florida.

The incident, which occurred just weeks after a bullet grazed Trump's ear in another assassination attempt in Pennsylvania, further underscored political violence in the US. Both incidents prompted intense scrutiny of the US Secret Service and its ability to protect high-profile candidates like Trump.

The suspect at the heart of this case, Ryan Wesley Routh, will represent himself in what could become an unorthodox trial. He has pleaded not guilty.

Routh, 59, is a North Carolina native but lived in Hawaii prior to the alleged assassination attempt. He has a previous criminal history and was a supporter of Ukraine in its war against Russia.

Here's what you need to know about the case.