Two men will be tried for burning the Koran in Sweden, charged with inciting hate against Muslims.
"We're witnessing the emergence of a cohort of teachers espousing reactionary, antisemitic, and Islamist ideologies," a lead researcher cautioned.
The post reportedly commented on the lack of mention of "Palestine" in the Koran.
The alleged attack had been planned in response to Quran burnings in Sweden.
Anti-Islam activists have burned several copies of the Koran in Sweden and Denmark.
The government rejected protests by some Danish opposition parties that said banning Quran burnings would infringe on free speech.
The decision to appoint a commission met with immediate scepticism from several political parties, including the government's support party, the anti-immigration Sweden Democrats.
Sweden's SAPO security service raised the terrorist alert from 3 to 4 on a scale from 1-5, reflecting a high threat.
The continuous repetition of insults against the Quran in Denmark and Sweden needs to end, and the authorities in both countries must confront these violations firmly and decisively.
Denmark is tightening border control due to security concerns after Quran burnings.