A police car was petrol-bombed in Belfast while an officer was inside the vehicle, outside the Belfast office of Alliance MP Naomi Long.
A police officer was also waiting outside the vehicle. Both officers escaped unhurt.
ITV News's Marc Mallett reports:
More top news
A newly promoted police officer caused a sensation with local women on Facebook
Ex-London mayor Ken Livingstone says he is sorry for the "disruption" caused by his comments that Adolf Hitler was a supporter of Zionism.
Kickstarter group asks for public donations to fund replacing Tube ads with pictures of cats