BELFAST -- Eleven police officers were injured in rioting overnight in the Northern Ireland town of Portadown, a long-running flashpoint between Protestants and Roman Catholics, police said on Sunday.
BBC television said several members of the public were hurt, but no serious injuries were reported."Police came under attack from petrol bombs, fireworks and stones," a police spokesman said.
Four people were arrested, and several police and military vehicles were damaged, he said.
Reuters photographer Paul McErlane said he saw about 100 masked, pro-British "loyalists" throw stones and other objects at security forces at the end of a traditional street parade in Portadown's Protestant heartland.
Security forces maintained a strong presence to try to avert trouble.