Poland says two Ukrainians working for Russia suspected over railway blast

Poland’s Prime Minister Donald Tusk, second right, visits site of the damaged rail line near the village of Mika (KPRM/AP)

Two Ukrainian citizens working for Russia are suspected of blowing up a railway line in Poland over the weekend, Prime Minister Donald Tusk has said.

Speaking to the Sejm, the lower house of the Polish parliament, Mr Tusk said the two suspects had been collaborating with Russian secret services for a long time.