Murder investigation after officer given 'all clear' over exposure

Poisoned mother-of-three dies in hospital over the weekend.

Assistant Commissioner Neil Basu: 'Strengthened our resolve'

Counter terror officers have launched a murder inquiry after Novichok poison victim Dawn Sturgess died on Sunday. The 44-year-old mother-of-three had been critically ill after coming into contact with the same deadly nerve agent that poisoned...