THIRUVANANTHAPURAM: Chief Minister Pinarayi Vijayan has written a letter to Union Railway Minister Ashwini Vaishnaw, demanding his attention on improving safety standards of contract workers engaged in railway works and to provide a monetary compensation to the families of four workers who died in an accident in Shornur.

Four workers from Tamil Nadu, including two women, who were involved in the process of cleaning the tracks by the railway contractor, were killed after they were hit by the Thiruvananthapuram-bound Kerala Express on November 2.

This tragic incident is the second after the previous case of a temporary sanitation worker, who was swept away and drowned while cleaning the Amayizhanjan Canal in Thiruvananthapuram. The Chief Minister withdrew the letter after the railways refused to take responsibility for the earlier incident.