Two men died following the incident in last night's practice
The road closure put in place following an incident that resulted in the deaths of two men at last night's Southern 100 practice has been extended until 4pm.
A rider and a marshal died in the incident during yesterday's qualifying session on the Billown Course.
Castletown by-pass has remained shut between Malew Road and Ballakaighen Corner to allow for investigations to take place.
The Department of Infrastructure has confirmed the emergency road closure is now expected to remain in place until 4pm.
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