An unidentified group on Wednesday attacked a distribution office of a Tamil newspaper in northern Sri Lanka, leaving at least three employees injured.

‘Uthayan’, a Jaffna-based Tamil daily’s distribution office in Killinochchi - the former LTTE stronghold - came to be attacked in the wee hours of Wednesday, police said.

The victims included its office manager. Also a distribution van and a motor cycle parked at the premises were damaged.

The Killinochchi police said an investigation was underway.

The pro-Tamil nationalist newspaper has come under attack several times in the recent past.

In January this year, a man delivering ‘Uthayan’ newspapers in Jaffna was attacked and his motorbike along with a stack of newspapers was set on fire.