NEW : Petrol bombs hurled at police after arrests in connection with soldiers ' killings . two arrested over slayings of Three soldiers in Northern Ireland Monday . The Continuity IRA , a republican splinter group that does not accept the Good Friday Agreement , said it had killed Carroll , Britain 's Press Association reported . Three men also being held in last week 's killing of police officer . Two Catholic groups have reportedly claimed responsibility for the killings .
NEW : Petrol bombs hurled at police after arrests in connection with soldiers ' killings . two arrested over slayings of Three soldiers in Northern Ireland Monday . Three men also being held in last week 's killing of police officer . Two Catholic groups have reportedly claimed responsibility for the killings .