The series will finish at the end of 2025, after 40 years and more than 9,000 episodes.
While no casualties have been reported at this stage, all public transport services have been paused.
Police say the gunman used a revolver which was smuggled in a hollowed-out book by a female suspect.
The pilot in five police force areas comes after Raneem Oudeh and her mother were murdered in 2018.
Four toddlers born with a rare eye condition have seen "life-changing improvements", say UK doctors.
Argentina's president gifted Elon Musk a chainsaw to symbolise cuts to bureaucracy.
The AfD party could become the second biggest in the German parliament after elections on Sunday.
An Indian drug maker tells a BBC undercover team its addictive cocktail drug is “very harmful” but “this is business”.
A coroner has ruled that the Army failed to protect Gunner Jaysley Beck from relentless harassment.
When Sir Keir Starmer touches down in Washington next week, he will be treading a fine diplomatic line.