The incident happened at around 7.30 pm in Dusseldorf’s Old Town on August 15.
Video footage shared online shows one officer pinning the boy’s hands behind his back and the other kneeling on his neck, in the same position that led to the death of George Floyd in Minneapolis back in May.
Officials in the western German state of North Rhine-Westphalia are now investigating the incident as a case of possible police misconduct
The four Dusseldorf Police officers involved are being probed by Duisburg Police for “reasons of neutrality”, the force said in a statement.
Officers were originally called to a restaurant in Dusseldorf to reports of 10 people rioting, German police said.
Dusseldorf police said the suspect resisted arrest and assaulted the officers. He was subsequently taken to a police station for questioning but was then handed back to his legal guardians.
The incident will be investigated by a different police department to ensure neutrality, officials said.
“We take this video very seriously,” a spokesman for the state’s Interior Ministry said. The spokesman added that if misconduct is found, prosecutors will take the necessary measures to address it.