Drivers were forced to swerve violently to avoid the contents of a wheelie bin which were were tipped onto a motorway from a bridge.
Hampshire police had to close two lanes of the M27 as motorists took evasion action early today.
Sgt Wayne Voller, of the Fratton roads policing unit, said the eastbound lanes near Fareham were shut for two hours as officers and Highways Agency staff cleared the road of bin bags and other rubbish.
The debris was thrown onto the motorway shortly after 1am from the Swanwick Lane bridge at Swanwick.
Sgt Voller, who attended the incident, said: ‘Drivers faced a real danger. I saw a car and a lorry swerve violently to avoid the rubbish. There is no doubt this was done deliberately.’
He appealed for witnesses who might have seen anyone on the bridge about 1.10am to contact him via 0845 045 4545.