At least 26 people were killed, and more than 50 others were injured in an explosion in the town of Finot Selam in the Amhara region of northwestern Ethiopia on Sunday. Manaye Tinaw, the CEO of Finot Selam General Hospital, told CNN that the dead and injured were transported to the hospital.

The total number of injuries from the explosion is currently unknown.

Tinaw added, "The information I've received indicates that the wounded were injured while they were in a vehicle." He clarified that the nature of the attack is unclear, but people reported hearing only one explosion.

He confirmed that the hospital treated more than 160 people in recent days - before the explosion - following the outbreak of intense fighting between government forces and the local militia known as "Fano," across the Amhara region earlier this month.

The Ethiopian Human Rights Commission expressed its "deep concern" in a statement on Monday regarding the violent fighting between the two forces since August 3, "after months of tension and sporadic clashes."

The rights commission confirmed that "intense battles occurred in and around cities and towns across the Amhara region, involving the use of heavy artillery, resulting in casualties among civilians."

The commission also noted a "widespread detention of civilians of Amhara ethnic origin" in the Ethiopian capital, Addis Ababa.

The Ethiopian government declared a state of emergency for six months in the Amhara region on August 4, following the outbreak of clashes between the two sides.

After both sides had been allies against Tigray forces in a deadly conflict that lasted for two years, which ended last November. Disputes between them have erupted since then after the Amhara militia resisted the federal government's move to disband regional forces, which regional nationalists claim threatens regional security.