On Monday evening a suicide bomb was detonated at the Manchester Arena in Manchester, which was holding a concert by US singer Ariana Grande. It has left 22 people dead and dozens more injured.
This morning it was confirmed that Martyn Hett (pictured), digital manager at Rumpus, is among the fatalities. Rumpus is based in Altrincham, which is eight miles outside of Manchester.
He had worked at the agency since 2013, having graduated from University of the Arts London the year before.
The agency's MD Paul Evans told PRWeek: "Martyn loved life, he celebrated it every day and packed it to the brim with his passions.
"He taught us so much about seizing opportunities and rejoicing in everything life could offer, no matter how small – a birthday, a great moment at work, a celebrity follower, he made them special, now we know why. He was taken from this world too soon, by forces we will never truly understand.
"Our heart goes out to his family and friends, the PR world has lost a true character."
Rumpus' Twitter account said "words fail us", and called him our "beloved friend".
For once words fail us @martynhett taken from us rip beloved friend— RUMPUS (@RumpusPR) May 24, 2017
The agency yesterday said on Twitter that Hett was missing.
A tribute was also posted by a friend.