An overstretched ambulance has declared a major incident - saying it is experiencing "extreme levels of pressure".
The South Western Ambulance Service has written to staff asking them to work extra hours, either day or night, Plymouth Live reports.
Workers have been asked to come forward "immediately".
In a statement within the letter, a spokesperson said: "South Western Ambulance Service NHS Foundation Trust have declared a Major Incident. This is due to extreme levels of pressure.
"Any SWAST staff member who is able to provide additional support for both days and nights, please contact the ROC directly.
"Thank you.
"South Western Ambulance Service NHS Foundation Trust."
And, it is not the first time the ambulance service has made an announcement of the kind.
Back in May, South Western Ambulance Service declared a critical incident due to "extreme pressures" on paramedics in the region.
The NHS Foundation Trust tweeted that some patients may need to wait longer for an ambulance while others might need to seek help elsewhere.
In a statement on Twitter, a spokesperson for the ambulance said: "We have declared a critical incident due to extreme pressures on our service.
"As a result, some patients may wait longer for an ambulance while others could be advised to access alternative services if their call is not life-threatening.
"We need you to only call 999 in a genuine, life-threatening emergency so we can help those most in need."
