Aug 19 (Reuters) - Russia has complained to Germany over

its investigation into the 2022 explosions of the Nord Stream

pipelines, RIA news agency reported on Monday, after a key

suspect escaped arrest in Poland.

German media reported last week that German prosecutors had

identified a Ukrainian diving instructor as a key suspect in the

Nord Stream sabotage attack and issued a warrant to arrest him

in Poland.

Poland received the German warrant but the suspect has left

the country as Germany failed to include his name in a database

of wanted persons, Polish prosecutors told Reuters.

Moscow believes the German investigation will be closed

without identifying those responsible, RIA cited Oleg Tyapkin,

the head of a European department at the Russian foreign

ministry, as saying.

"We have raised the issue of Germany and other affected

countries fulfilling their obligations under the UN

anti-terrorist conventions," Tyapkin said.

"We have officially made corresponding claims on this matter

bilaterally, including to Berlin."

The multi-billion dollar Nord Stream 1 and 2 pipelines

transporting gas under the Baltic Sea were ruptured by a series

of explosions in September 2022, seven months after Russia

launched a full-scale invasion of Ukraine.