World News Update, what you need to know

Prince Charles has become the first British royal to meet Irish republican leader Gerry Adams, on a visit that will take him to the scene of his great-uncle's murder by the IRA.

ELSEWHERE:

NEW YORK - US agents in New York have seized a record-breaking $US50 million ($A62.57 million) worth of heroin smuggled from Mexico in the biggest such haul in state history.

WASHINGTON - A deadly biker brawl in Waco, Texas was apparently set off when a motorcycle gang showed up uninvited at a gathering of rival biker groups, police say.

SOUTH SHIELDS, England - John Simpson Kirkpatrick has been remembered 100 years after he was killed in Gallipoli as a war hero who epitomised both the spirit of north east England and a young Australia.

LONDON - Police have arrested seven men over an audacious heist in London's diamond district last month, when a gang drilled through a reinforced concrete vault and broke into 72 safe deposit boxes.

LONDON - Australian landscape designer Charlie Albone dreamed of winning the Best Show Garden gong at the prestigious Chelsea Flower Show in London but was nevertheless proud to walk away with a silver-gilt medal.

BEIRUT - Air strikes by a US-led coalition against the Islamic State group in northeastern Syria have killed around 170 jihadists in the past 48 hours, a monitoring group says.

MARSEILLE - Investigators have identified the remains of all 150 people aboard a Germanwings flight that was deliberately crashed into the French Alps, allowing them finally to be laid to rest.