Sean Grayson, former officer who killed Sonya Massey, dies in US prison of cancer

Sean Grayson, the former police officer convicted of murdering Sonya Massey, has died in a US prison while undergoing cancer treatment. Massey, a Black woman shot in her own home, became a symbol of the debate over police brutality in the United States. Grayson had been convicted after footage of the shooting drew widespread outrage.