Police said they were attacked with paint bombs and pieces of masonry as they examined a suspicious vehicle in the Ballycolman estate in the town this morning.
Two controlled explosions were carried out in the early hours – wrecking the vehicle – but nothing untoward was discovered and residents have returned to their homes.
Thirty families had to be moved from their homes.
SDLP councillor Patsy Kelly said the vehicle, which had Donegal registration plates, had been parked in the area for several days.
“People in Strabane have had enough disruption through the years, and they’re fed up with it,” he told Radio Foyle.
“They deserve to be able to sleep at peace in their homes without this unnecessary and unwanted disruption.”