The militant group responsible for the Chechen insurgency denied it has any link to the Boston Marathon bombings and claimed the investigation is part of an anti-Chechnya “PR campaign”, NBC News reported.
The Chechen mujahideen's media operation, the Kavkaz Centre, published a blog post in which it mocked the "lightning speed" that suspects Dzhokhar and Tamerlan Tsarnaev were identified, according to a translation.
It questions the logic that the Tsarnaev brothers could be terrorists, saying, "The news that the brothers attacked police officers, carjacked a man and did an array of other things, instead of going into hiding, looks strange at the very least”.
The Kavkaz Centre also suggests that Dzhokhar Tsarnaev - who remains on the run - was “very far from your typical ‘Islamic terrorist’".
"What's more, he just logged onto his Russian social networking site a few hours ago”, it added.
Detectives in Boston are looking further afield as they piece together their case against Marathon suspect Dzohkhar Tsarnaev.
The uncle of Boston bombing suspect Tamerlan Tsarnaev described his recent visit to Dagestan in Russia and his great shock at the attacks.
Both men were enrolled in a school in Dagestan, a neighbouring region that was drawn into Chechnya's violence during the 1990s.