A train with highly toxic yellow phosphorus which derailed and caught fire in the Lviv region last Monday had crossed Ukraine’s border with violations, Semen Krol, head of the regional policy department of the presidential secretariat, told reporters on Tuesday, according to the President`s press-office.

He said no such dangerous chemical substance can be brought in the country when it is 40°C outdoors and that cars with phosphorus must be kept under a protective cover and sprinkled with water in heat. Krol insisted that phosphorus can only be transported under a 60-cm layer of water on hot days and added that the cars “had only 30 centimeters.”

He said there had been some other violations, adding that Ukraine can refuse to accept any cargo that does not meet its safety requirements.