Emergency services have been called to a serious road collision near Machynlleth.
Motorists are asked to avoid the B4405 at Tal-y-Llyn following the incident on Monday morning.
North Wales Police Gwynedd South tweeted at about 11.40am, urging drivers to 'take an alternative route'
Motorists are asked to avoid the B4405 at Tal-y -Llyn near #Tywyn #Gwynedd as officers deal with a serious road traffic collision. Please take an alternative routes.
— NWP Gwynedd South (@NWPGwyneddSouth) August 20, 2018
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