Police in Northern Ireland says two of their officers were wounded by a bomb on the outskirts of Belfast.
The bomb was thrown at a police patrol as they responded to an alarm call at a toy store late at night.
Their injuries are not thought to be life-threatening.
It was the latest in a series of attacks on law enforcement personnel.
Police have blamed Irish nationalists for bombs at the homes of police officials on Wednesday near the city of Londonderry.
They have not said who was to blame for the latest attack.
Officials say nationalists opposed to Britain's presence in Northern Ireland are more active than at any time since the peace deal in 1998.