A BT call centre in Portadown took some of the 999 calls during the horrific fire at a London tower block earlier this week.
Some of the hundreds of calls relating to the Grenfell Tower fire were dealt with at the Portadown centre, BT has confirmed.
It is understood some of those who took the calls were very distressed.
Seventeen people have died and 12 people are in critical care after a huge fire engulfed a west London tower block in the early hours of Wednesday.
One person said a family member who worked at the centre was very upset after dealing with ‘very distressing calls’.
A BT spokesperson said: “BT’s 999 team across the UK responded to emergency calls throughout this tragic incident. As per usual processes, calls were onward connected to the relevant emergency service.
Our thoughts and deepest condolences remain with everyone affected.”