A Polish diplomat was beaten Wednesday in Moscow in the second attack of its kind in a week while Moscow police are hunting for an anonymous caller who threatened to blow up the Polish embassy.

"Four unidentified people attacked a second secretary of the embassy and beat him" at a square 10 minutes' walk from the embassy in central Moscow in the afternoon, a law enforcement official told the Itar-Tass news agency.

The diplomat, identified as Marek Reszuta, was rushed to hospital after he asked police on duty nearby for help.

"He suffered minor injuries, but medics believe he may have suffered a concussion," the source said.

Polish Ambassador to Russia Stefan Meller has demanded to meet Russian First Deputy Foreign Minister Valery Loshchinin following the attack.

A Polish embassy official said the embassy is "astounded and deeply concerned about the security of our employees."

The attack came three days after another Polish embassy employee was beaten up near the embassy compound.

"It is not the first case of this kind. We are writing another note to the Russian Foreign Ministry. Warsaw is to decide whether it will be a note of protest," the embassy official said.

The attacks happened days after unidentified attackers beat up three sons of Russian diplomats in Warsaw and grabbed their mobile phones. Russia demanded an apology, citing anti-Russian sentiment in Poland. The Polish Foreign Ministry expressed regret over the assault and stopped short of an apology, saying the attack was not politically motivated.

In a separate development, police are searching for an anonymous telephone caller who threatened to blow up the Polish embassy Tuesday, the Interfax news agency reported.

The Polish embassy informed police about the bomb threat Tuesday afternoon, when an anonymous caller rang in and said:"You've two minutes left before a blast."

The threat turned out to be a hoax. Neither explosives nor bombs were found in the embassy building after the compound was examined by a bomb expert with a sniffer dog.

Source: Xinhua