President Donald Trump has called again for a drug test on “sleepy” Joe Biden, Democratic presidential nominee, before their upcoming debate.

This came as a continuation of Trump’s malicious line of attack on his opponent.

Trump tweeted on Sunday: “I will be strongly demanding a Drug Test of Sleepy Joe Biden prior to, or after, the Debate on Tuesday night. Naturally, I will agree to take one also.”

 “His Debate performances have been record-setting UNEVEN, to put it mildly. Only drugs could have caused this discrepancy?”

Trump and his surrogates have for months now been attacking Biden’s mental fitness for the presidency, with the president accusing Biden of using drugs to help his performances in public.

Trump however gave no evidence for his provocative remarks.

The first presidential debate is however scheduled to take place on Tuesday in Cleveland.