One of the motorcyclists involved in a road accident at Alpine Corner yesterday lunchtime was today 'critical but stable' in Noble's hospital.
The other was described as 'serious, with non-life threatening injuries'.
The two men, in their early twenties, are visiting the Island from Lincolnshire.
Both bikes collided with a parked and marked police vehicle.
The stretch of the TT course from Kirk Michael to Ballaugh was closed for nine hours while the emergency services dealt with the incident.
Researching your Manx family history can be a very interesting and rewarding hobby. Trace your roots in the Isle of Man with our helpful of guide.