What's really happening in US? As days after Donald Trump assassination attempt, a Florida man was arrested for making threats against US President Joe Biden.

Identified as Jason Patrick Alday, the accused was arrested on Monday, the US Attorney's Office for the Northern District of Florida said.

Alday, of Quincy, Florida, allegedly "engaged in sending threatening communications, making threats against President Joe Biden and other federal officials," the office said in an announcement Wednesday.

As per the complaint, Alday made threatening statements about Biden while being checked into a mental health facility in Tallahassee, Florida, last month. He allegedly made further threats in posts on X. Alday has been ordered detained pending trial.

In another development, US President Joe Biden has tested positive for COVID-19 and is showing mild symptoms, the White House said. "He (Biden) will be returning to Delaware where he will self-isolate and will continue to carry out all of his duties fully during that time," the White House said in its official release on Wednesday (local time).

Joe Biden, 81, tested Covid positive on Wednesday, a day after he attended the NAACP National Convention in Las Vegas, where he strongly criticised Donald Trump's policies and also condemned the increase in gun violence in the nation.

The US President is vaccinated and has also had COVID-19 vaccine booster shots, the most recent being in September 2023, the WH said.