Polish Prime Minister Donald Tusk will push ahead with a cabinet reshuffle on Wednesday, possibly replacing key ministers in his unpopular center-right government, amid a sluggish economy and corruption allegations.

"Tomorrow around 11:00 am (1000 GMT) I will make a statement on a cabinet reshuffle," Tusk told reporters in Warsaw on Tuesday without elaborating.

Russian police on Wednesday arrested three far-right protesters for pelting the Polish embassy with smoke bombs in response to a nationalist riot outside Russia's diplomatic compound in Warsaw.

Supporters of the Other Russia organization that unites small anti-Kremlin opposition groups also unfurled a black banner reading "Russia from Warsaw to Port Arthur" before being detained by the police.

Poland was in hot water on Tuesday after ultra-nationalist rioters went on the rampage outside the Russian embassy in Warsaw, igniting a diplomatic row with Moscow.

The violence, which marred Polish independence day on Monday, reflects growing far-right and anti-Russian sentiment in Poland, an ex-communist country and European Union member.

Polish photojournalist Marcin Suder, who was kidnapped in Syria in July, has managed to escape his captors and is back home, Poland's foreign ministry announced on Thursday.

"Marcin Suder is already back home," Radoslaw Sikorski said on his official Twitter account.

Arsonists attacked a mosque in Poland Wednesday during the Muslim Eid al-Adha holiday amid tensions over a nationwide ban on halal animal slaughter and protests by animal rights activists.

"It was definitely arson," Grazyna Wawryniuk, spokeswoman for regional prosecutors in the Baltic port city of Gdansk where the mosque is located, told Agence France Presse.

Glued to the wall, young men and women eye each other timidly as a priest circles the room and nudges neighbors together, encouraging them to mingle over cookies and tea.

It is the fifth monthly "mass for singles" at Our Lord's Ascension Church in Warsaw, one of several such initiatives across heavily Catholic Poland at a time when loneliness is on the rise and faith is waning.

A Polish photojournalist kidnapped in Syria in July is alive, Poland's foreign affairs minister announced on Saturday.

Radoslaw Sikorski confirmed to radio RMF FM that Marcin Suber was "alive" but said he could not give any details about his health or whereabouts for his "own good".

Poland's powerful Roman Catholic church on Monday hailed a Vatican announcement that its own John Paul II would be one of two late popes to be made saints next April.

"It will be a great day for the whole church worldwide, for Poland's church and for our country," episcopate spokesman Father Jozef Kloch told reporters Monday in Warsaw.

Poland's powerful Roman Catholic church on Friday apologized over two alleged pedophile priests as prosecutors on both sides of the Atlantic began probing the men, one a former Vatican envoy.

Prosecutors in the Dominican Republic have asked Interpol to arrest fugitive Polish priest Wojciech Gil, 36, who allegedly abused several young boys while serving on the Caribbean island.

Poland's parliament on Friday abandoned a proposal to restrict abortion in the case of congenital disorders in the heavily Catholic country.

Four hundred thousand Poles signed a petition demanding the move, but lawmakers rejected it on the first reading with 233 votes against, 182 in favor and six abstentions in the 460-seat parliament.