They were joined in the no lobby by Green MP Caroline Lucas (Brighton Pavilion), three Social Democratic and Labour Party MPs Mark Durkan (Foyle), Dr Alasdair McDonnell (Belfast South) and Margaret Ritchie (Down South) and Respect MP George Galloway (Bradford West).
Stormont Minister for Justice and Alliance leader David Ford attended alongside Minister for Justice Alan Shatter, Garda Commissioner Martin Callinan and PSNI Chief Constable Matt Baggott. The SDLP was represented by Margaret Ritchie, Alasdair McDonnell, Alex Attwood and Joe Byrne. They were joined
SDLP leader and South Down MP Margaret Ritchie said: "There is immense shock and grief on our island at this terrible tragedy and I would like to express my deepest sympathy to the families and friends of those who lost their lives."