Authorities in Ethiopia are investigating circumstances under which the country manager of Dangote cement was killed by unknown assailants on Wednesday.
According to Addis Standard, Deep Kamara, and two more Ethiopians, a driver and a secretary, were shot dead by the gunmen.
They were returning to the capital, Addis Ababa, from the factory, a government statement said.
Ethiopia, Sudan and Egypt have agreed to set up an independent scientific research team on the controversial Grand Ethiopian Renaissance Dam (GERD).Once completed, with a generation capacity of 6,450MW, GERD will be the largest hydro-power plant in Africa.
"Security forces are now pursuing the assailants", it said.
However, Addis Ababa assured none of that would happen, while defending the need to build the dam to bring electricity to almost 60 million Ethiopians who lack it. It has rich limestone reserves of about 223 million tonnes.
Oromia has been plagued by violence for the past two years over political and economic grievances by Oromo youths - despite being the country's largest group. The statement called on residents in the area to help gather details.
2017 protests, trucks belonging to Dangote Cement were torched by protesters, but a reconciliation ceremony had been organised in September 2017, which was attended by hundreds of locals.
The country remains under a state of emergency imposed in February, a day after Prime Minister Hailemariam Desalegn resigned.
Sisi cited an announcement during a meeting between Sudanese President Omar al-Bashir and Ethiopia's Prime Minister Abiy Ahmed in Sudan "that Egypt's share will not be affected".
Since taking over amid the unrest that threatened the ruling coalition's tight grip, Ahmed has vowed "a new political beginning", including more democratic rights.