It's reported today that Gardai have taken DNA samples from a Dublin pay phone as part of the investigation into a bomb threat at Intel.

The Leixlip plant was evacuated yesterday morning after warnings were made in two calls.

According to the Irish Examiner, a phone box in Balbriggan was sealed off for a forensic examination, and the Garda Commissioner has briefed the Justice Minister about the incident.

Gardai have already said the incident represented a 'credible threat'.

The alarm was raised shortly after 6am yesterday, and staff were evacuated from the building - which employs around 4,000 people.

The alert ended without incident and the company said its employees returned to work.

A spokesperson for the Defence Forces said earlier the operation was led by the gardaí, and the army bomb disposal squad was not deployed to the area.

"As per normal protocol, gardaí shortly thereafter coordinated a response with Intel. A controlled evacuation of the site followed and a search was conducted by trained Intel security personnel throughout the campus with the buildings being declared safe just after 8.30am," Intel said in a statement.

There had been traffic diversions in place, but these were lifted after the alert ended.