The Russian Foreign Ministry has ordered a criminal investigation into the incident. The incident occurred on the night of April 30 to May 1, according to the ministry.

The investigation will look into the circumstances surrounding the incident, as well as the motive behind it. The Russian foreign ministry has also ordered an investigation into a possible breach of the country's sovereignty by a group of Estonian citizens. The case is being investigated by the Investigative Committee of the Russian Ministry of Foreign Affairs, which is responsible for the investigation of the case.