Royal Mail says the majority of staff are back at its Dorcan office after positive coronavirus tests prompted a deep clean.
The organisation confirmed the closure and clean earlier in the week,
A spokesperson said today - Wednesday, 22 July: “Royal Mail takes the health and safety of its colleagues, its customers and the local communities in which we operate very seriously.
"An intensive clean of the building has been completed following the two positive tests for coronavirus. The majority of our colleagues are now back in the office and are focusing on providing a full service to the local community.
“Throughout this crisis, every decision we make puts the health of our people and customers first. We have put in place a range of preventive measures to protect both our customers and our colleagues.
"As well as encouraging good hand hygiene, standard ways of working have been revised to ensure that colleagues stay two metres apart at all times.
"All staff have been briefed about the social distancing measures jointly agreed by local management and the CWU [Communication Workers Union].
"This has been supplemented with visible reminders such as posters and one-way floor markings.
"In addition there is only one person permitted in a Royal Mail delivery vehicle at any one time.”