Londonderry bomb: PSNI say two arrests have been madePolice in Londonderry have arrested two men in their 20s in connection with a bomb in the city on Saturday.
They said the attack may have been carried out by dissident republican group the New IRA.
A pizza delivery van was hijacked by two armed men in Derry at about 18:00 GMT.
The bomb, which went off at 20:09 GMT, was described as a "crude device". The PSNI said the attack outside the courthouse was "unbelievably reckless".
Assistant Chief Constable Mark Hamilton said the van, with the bomb inside, was left outside the courthouse on Bishop Street at 19:23 GMT.
Three minutes later, a warning was called into the Samaritans in the West Midlands. It was passed to West Midlands police, who contacted the Police Service of Northern Ireland.
"In the intervening minutes we had already found the car and were starting to evacuate the area," said ACC Hamilton.
"Clearly, it was a very significant attempt to kill people here in this community.
"Thankfully, the local community and the police service acted bravely together and we got everybody away just in time.
"But the bomb detonated just as we were leaving the area.
"The new IRA, like most dissident republican groups in Northern Ireland, are small, largely unrepresentative and determined to drive people back to somewhere they do not want to be."
A cordon remains in place at the scene.
Residents, hundreds of hotel guests, 150 people from the Masonic Hall and a large number of children from a church youth club were evacuated.
Greg McLaughlin, who lives nearby, said his windows shook with the force of the blast.
"It was very, very loud. I knew right away this was a bomb," he said.
"We knew it was quite close.
"You could see the ball of fire on the street. It sounded to me like a very significant blast. I haven't heard anything like it in Derry for quite a while."
ACC Hamilton said dissident republican groups "always aspire to do bigger things".
He said the device "has not been as effective as they would have wanted for it to be".
"They have not killed anybody and they haven't caused widespread damage, " he said
Tourism impact
Colin Neill, chief executive of Hospitality Ulster, said businesses were determined to trade as normal despite disruption in the area.
He said the bomb "will not deter us from opening today and getting on with the job".
https://www.bbc.com/news/uk-northern-ireland-46937061