Sri Lanka president dismisses security officials

Sri Lanka's president has replaced the country's defence secretary and taken steps to dismiss the police chief, three days after a series of suicide bombings killed more than 350 people. The authorities are facing criticism because they failed to act on intelligence which warned of possible attacks.

Also in the programme: Boeing has suffered a steep fall in profits following the grounding of its 737 Max airliners, and the US space agency detects its first seismic event on Mars.

Picture: Sri Lankan President Maithripala Sirisena. Credit: Lakruwan Wanniarachchi/AFP/Getty Images.