Security was tightened at Sullom Voe oil terminal today after a 49-year-old man, believed to be armed, was arrested for allegedly making threats.
The police were alerted and the man was traced to an address near Lerwick. Firearms officers were sent in and the man was safely removed from the house and arrested at around 2pm.
As a result of the alleged threats security checks were tightened at the oil terminal and staff were briefed in line with safety procedures.
The man is expected to appear at Lerwick Sheriff Court tomorrow.