this is bbc news. im lu kwesa im lukwesa burak. the headlines at four. russia investigates how and what caused the explosion that severely damaged its state of the art and well defended bridge to crimea. officials in the ukrainian city of zaporizhzia say 17 people have been killed by a russian missile strike on an apartment block. cabinet ministers are urging tories to rally behind prime minister liz truss to avoid risk of defeat at the next election. police in ireland have named the ten people who died in an explosion at a petrol station in donegal. investigations are ongoing to establish the cause. it is a huge impact to a small rural community. they are all local people. they are all very much involved in the community.