A lorry driver has died after his vehicle left the road and overturned, police said.
The 37-year-old, from Dudley, was driving on the M5 southbound between junctions 11a and 12.
It is believed the articulated lorry was carrying a box containing live bees when it left the carriageway.
A Gloucestershire Police spokeswoman said: "The incident happened at approximately 1.30am when the articulated lorry left the road and overturned.
"The driver is believed to be a 37-year-old man from Dudley.
"During the recovery of the vehicle and its load, a damaged box containing live bees was discovered.
"Police have contacted the Gloucestershire Bee Keepers Association who will be attending to help recover the insects.
"It is not known how many bees were or are in the box."
The spokeswoman added it was too early to speculate on the cause of the crash. The driver's next of kin and the coroner have been informed.
Anyone with any information about the incident is asked to contact Gloucestershire Police on 101, quoting incident number 20 of June 1.