(CNN) -- Rioting has flared near Belfast on Saturday after the arrests of three men in the killings of two soldiers in Northern Ireland last week, police said. Two people in masks prepare to throw petrol bombs Saturday in Lurgan, Northern Ireland. Petrol bombs have been hurled at police in Lurgan, a town in County Armagh, 20 miles west of Belfast, police in Northern Ireland said. There are gangs of youths on the streets, authorities said, but there have been no arrests or injuries. Police announced the arrests on Saturday and said the three men have been taken to the police service's Serious Crime Suite in County Antrim. One of them, a dissident republican named Colin Duffy, is from Lurgan.
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NEW: Petrol bombs hurled at police after arrests in connection with soldiers' killings
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Three arrested over slayings of two soldiers in Northern Ireland last week
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Three men also being held in Monday's killing of police officer
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Two republican groups have reportedly claimed responsibility for the killings
Two days after the soldiers were killed, a police officer was killed in a shooting southwest of @placeholder.