A device thrown into the garden of a home in the Waterside was a viable pipe bomb, police have now confirmed.
A controlled explosion was carried out early on Friday morning after a number of residents were evacuated.
A PSNI spokesman confirmed on Friday morning: “Police attended a security alert in Derry following a suspicious object being thrown into the rear yard of a house in Ebrington Street at approximately 12.10am in the early hours of Friday 29 January.
“ATO attended and a controlled explosion was carried out just after 5.30am.
“The object has now been declared as a viable pipe bomb type device.”
A number of houses were evacuated and the Clooney Centre was made available for anyone in need of shelter. “The evacuated residents are now able to return to their homes,” the PSNI spokesman said, adding:
“Emerson Street and Bond Street were closed to traffic for a while but have now reopened.”
Detective Sergeant Brian Reid said: “I would ask anyone with any information about this incident to contact detectives at Strand Road Police Station on the non emergency number 101.
“Or if someone would prefer to provide information without giving their details, they can contact the independent charity Crimestoppers and speak to them anonymously on 0800 555111.”