One of the two teens who fled Austria last year to become a “poster girl” for ISIS has been beaten to death after trying to escape the group’s Syrian stronghold of Raqqa, reports say.

A Tunisian woman who had been living with Samra Kesinovic, 18, says the young girl was killed by Islamic State extremists after she tried to flee recently, according to The Local Austria.

Kesinovic and her friend Sabina Selimovic, 15, made headlines in April 2014 when they ran away from their homes in Vienna and shacked up with militants in Syria.

The gal pals had traveled to the war-torn nation with the hope of becoming “jihadi brides” — and they later married two of the ISIS militants upon their arrival.

Photos posted to social media in the following months showed the pair wearing black burkas and wielding AK-47s.

Officials said earlier this year they believed Selimovic had been killed during a skirmish in Syria.

The girls were just two in a long list of young, female Austrian nationals who have joined the bloodthirsty terror group in recent years.

The European country is a well-known target for ISIS recruitment, and the mastermind behind this month’s Paris terror attacks was even busted at a checkpoint in northern Austria in September. He claimed to be on vacation.