Denmark has accused a Russian warship of firing two emergency flares at one of its helicopters while it was tracking the vessel in the Baltic Sea, BBC reported. 

The Danish government has summoned the Russian ambassador over the incident, which it said happened during a "routine" monitoring operation on Monday.

Prime Minister Mette Frederiksen branded the Russian action "reckless" and said it was designed to "intimidate and divide".

Russia said it would "thoroughly investigate" the incident but accused Danish helicopters of making "dangerous manoeuvres" near Russian warships, according to BBC.