A suspected explosive device has been found in a four-wheel-drive on the Princes Highway in Melbourne’s south-east. The bomb squad is at the scene and examining the device, believed to be in the back of the 4WD.

A police spokeswoman said a suspicious homemade device was found after police stopped and searched the 4WD on the Princes Highway, near Ambrie Road, in Noble Park North about 4.30pm on Tuesday.

A quantity of drugs was also found in the car, the spokeswoman said. The driver, a woman believed to be in her 20s, is assisting police.

The area has been cordoned off.

All eastbound lanes of the Princes Highway are closed near Corrigan Road.