(Adds context, latest statement)
LONDON, Sept 7 (Reuters) - Britain's foreign Minister
Dominic Raab said he had summoned Russia's ambassador to the UK
to express his concern at the poisoning Alexei Navalny.
Navalny, a prominent critic of President Vladimir Putin, was
airlifted to Germany last month after collapsing on a flight
from the Siberian city of Tomsk to Moscow. Germany has concluded
he was poisoned with Novichok.
"Today the UK summoned Russia’s Ambassador to the UK to
register deep concern about the poisoning of Alexey @navalny,"
Raab said on Twitter.
"It’s completely unacceptable that a banned chemical weapon
has been used and Russia must hold a full, transparent
investigation."
Moscow says it has seen no evidence he was poisoned.
Raab added that he was relieved to hear Navalny had been
taken out of his medically-induced coma.
In a separate statement, a foreign office spokesperson said:
"There is a case here for Russia to answer. This took place on
Russian soil, against a Russian citizen. They have international
obligations to uphold.
"This is nothing short of an attack against the rules based
international system which keeps our societies safe."
(Reporting by William James. Editing by Andrew MacAskill)