Three senior security officials from Pakistan are due to arrive in Nairobi on a fact-finding mission following the killing of a prominent journalist Arshad Sharif on Sunday.

They are Director of Police Athar Waheed, the Intelligence Bureau's Omara Shahid Hamid, and Colonel Saad Ahmed from the Pakistan Army.

A statement from Pakistan’s Ministry of Interior says the three officials will assist in the investigations.

The team is expected to submit a report to the ministry after concluding their visit.

The body of the slain journalist arrived in Pakistan on Tuesday and moved to a state-owned medical facility for a post-mortem examination following a request from the family.

Meanwhile, investigations into the deadly shooting have begun in Kenya.

Kenya’s police watchdog is also investigating the incident.

Police say the shooting is being treated as a case of mistaken identity.

The death of Mr Sharif remains a mystery after police gave contradicting accounts about the circumstances that led to his killing.

A senior police officer who spoke to the BBC on condition of anonymity said Mr Sharif’s driver defied orders to stop by police manning a check point along Magadi Road prompting officers to shoot at it.

The police were pursuing a car, a Toyota Land Cruiser, that was reported as stolen in Nairobi and radar traced it to the area which is about 80km (50 miles) south of the capital.

Another version says that the vehicle's occupants shot at police officers manning a roadblock in the area injuring one of the officers. This forced the police officers to shoot back at the occupants of the vehicle.

It has also emerged that the car that was reported stolen on Sunday evening was a different model, a Mercedez Benz, with a different registration number to the Toyota Land Cruiser.

Meanwhile, four police officers have been questioned and recorded statements over the incident.