Laurence Tribe, pictured in 2003, has taught at Harvard Law School since 1968.

A liberal Harvard Law School professor falsely claimed on Twitter Monday that a source for the infamous Trump-Russia dossier was killed when a Russian passenger plane crashed over the weekend.

Laurence Tribe alleged that one of the crash’s 71 victims was a man called Sergei Millian, according to The Daily Caller. Tribe, who has taught at Harvard for five decades, claimed Millian “is said to be behind one of the most salacious claims in the dossier on Trump’s involvement with Russia.”

“Probably just a coincidence,” Tribe added sarcastically.

The tweet, which Tribe deleted but…