Feared terror attack turned out to be drunk teenagers firing air pistol at trams

A feared terror attack turned out to be drunk teenagers firing air pistols at trams.

Police sent all available patrols and a squad of armed police to the scene in Poland's second city of Krakow after reports of gunfire.

Passengers on board reported diving for cover as windows smashed after being pelted with bullets from the teenagers' guns.

An elderly man suffered an eye injury caused by flying glass.

Eyewitnesses had called police to report shots had been fired at two trams, on the 52 and 73 routes, heading towards the Nowa Huta district in the eastern part of the city.

Police checked the damage and launched a search of the area which led to the arrest of two 18-year-old men about an hour later.

The teenagers, who were both drunk according to local authorities, were found to be in possession of a CO2 gas cartridge powered air pistol.

Police say one of the youths was from Krakow and had not been in trouble before. His companion, who was homeless, had a criminal record for violence and drug offences.

The pair are still being questioned at a police station in Krakow. They are expected to face serious firearms charges and the prospect of up to five years in jail if they are convicted.

Cops are also interviewing witnesses and checking footage from CCTV cameras in the area as part of their ongoing investigation.

The hurt tram passenger, a 78-year-old man, was treated by paramedics at the scene who said his injuries were not serious.

Krakow, in the southern Lesser Poland region, is rated as one of Europe's most beautiful cities. Its Old Town is a UNESCO World Heritage Site.