Police are appealing to the public to avoid the A4244 following a road traffic collision.
North Wales Police have closed the A4244 in Glasinfryn while emergency services attend the scene.
“Please note that the A4244 in Glasinfryn, Bangor is closed following a serious road traffic collision,” a North Wales Police Spokesperson said.
“Please avoid the area and use alternative routes whilst emergency services are at the scene.
“Thanks in advance for your patience.”