The investigation committee of the prosecution service of Russia has several versions of the explosion in Pyatigorsk, the deputy head of the committee Alexander Bastrykin said.
The first version is a terrorist attack. Other versions are infighting between business crime groups or competitors for the post of mayor, Bastrykin said in an interview for ‘Rossiskaya gazeta', which will be published on Thursday.
The explosion in Pyatigorsk injured over 30 people, ITAR-TASS reports.
