The security alert in the Springhill Park area of Strabane has now ended.
Springhill Park has re-opened to traffic and residents have been allowed to return to their homes.
It has been confirmed that a suspicious object discovered in the area was a viable pipe bomb.
The alert let as many as 30 people being evacuated from their homes, many of them elderly.
Speaking earlier, Local Councillor Jay McCauley said the alert had caused great inconvenience:
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