MOSCOW, November 19 (RAPSI) - Upwards of 600 people were detained and taken into police custody during a crime prevention operation at the Moscow marketplace "Sadovod," an official Moscow police spokesman told RIA Novosti Tuesday.

All of the detainees will be fingerprinted and checked for involvement in criminal activity.

Approximately 1,000 Kyrgyz, Tajik, and Uzbek citizens were detained at the same market on October 28.

According to the police, many of those detained had no documents with them.  Other violations at the market included trade of counterfeited clothing under famous brand names and trading illegally in alcohol. Cold weapons and baseball bats have been confiscated by the police as well.

Russia's anti-migration sentiment reached its climax this summer when an incident at an open-air market in Moscow left a police officer with a broken skull. A police officer was beaten up when he tried to arrest a 25-year-old Dagestani native wanted on suspicion of trying to rape an under-aged girl.

Another incident occurred a week before with anti-migrant riots that targeted a vegetable warehouse in the Biryulyovo neighborhood in Moscow. Violence erupted after protests over the fatal stabbing of a 25-year-old. Hundreds of people were detained by police. Around 70 people have been charged to date with minor administrative offenses.

On October 14, more than a thousand people, most of them reportedly labor migrants based in or around Biryulyovo, were detained. The round-up seemed to be a response to anti-migrant sentiment.

The suspected killer, identified as Orkhan Zeinalov, from Azerbaijan, was apprehended by police special forces in the city of Kolomna, some 120 kilometers southwest of Moscow the next day, and was flown to Moscow in a helicopter.