A suspected car bomb has exploded outside a court house in Derry/Londonderry in Northern Ireland.
A photo, tweeted by the Police Service of Northern Ireland (PSNI), showed what appears to be a vehicle on fire in the city centre just after 8pm.
The tweet also warns members of the public that Bishop Street is closed.
“STAY AWAY. Suspected car bomb,” it added.
Nobody is believed to have been injured.
Hotels, bars and clubs in the area, busy on a Saturday night, have also been evacuated, it has been reported.
A witness, who wished to remain anonymous, told Sky News she heard the blast despite being a 10 minute walk away from the courthouse.
“I felt and heard the explosion from Creggan Road, about a 10 minute walk away,” she said.
“Friends in the next street from the blast said they could feel it in their flat, they said it shook them.”
Sinn Fein MP for Foyle, Elisha McCallion, said nobody appears to have been injured, as she condemned the blast.
“This incident has shocked the local community,” she said.
“In particular, there are many elderly residents who live in the area who have been alarmed by this.
“Thankfully no-one appears to have been injured.
“Derry is a city moving forward and no-one wants this type of incident. It is not representative of the city.
“I would encourage anyone with information about this incident to bring it to the police.”
Gary Middleton, DUP member of the legislative assembly for Foyle, called it a “disgraceful act of terrorism” which is a “deeply disturbing…throwback to the past”.
He said the PSNI confirmed there were no injuries.
:: Anybody with information about the incident should call police on 101 or Crimestoppers anonymously on 0800 555 111.