The motorway was closed in each instructions between J3A and J4 (Whitburn), with footage launched by Visitors Scotland round noon exhibiting a protracted tailback of site visitors on eastbound carriageway.
One motorist caught within the tailback posted on social media: “At present parked on the #M8 eastbound close to Bathgate as its been closed on account of a police incident. Keep away from in any respect prices.”
Images posted on Twitter present drivers leaving their stationary vehicles because the tailbacks proceed.
Blackburn Street into Bathgate has additionally been closed off whereas officers attend to the incident.
A spokesman for Police Scotland mentioned: “There’s concern for an individual and the street stays closed in each instructions”.