[Omah]

Update

Armed police officers could be seen next to the single-decker coach on the southbound carriageway, as passengers were led off one by one.

Passengers were made to sit on the northbound carriageway, apart from one another, while surrounded by officers.

Sniffer dogs and forensic officers were also brought in to aid the search, as officers in forensic suits and others in military fatigues checked the area.