South Wales Police are currently at the scene of a vehicle fire on the M4 between Junction 37 (Pyle) and Junction 36 (Sarn).
Lanes one and two on the eastbound carriageway have been closed while emergency services deal with the incident.
The closures are expected to remain in place for some time, and drivers are being urged to avoid the area and use alternative routes where possible.
A spokesperson for South Wales Police said: “We’re grateful for the public’s patience while the incident is being dealt with.”
