Statement from Sudan Council of Ministers indicates that there was a military attack from Ethiopian side and they follow this carefully. Sudan and Ethiopia have been accusing each other on the border issue.
Recently, there was a report that Sudanese military crossed Ethiopian border and approached Metama. Ethiopia had not commented that report. Looting of property was also reported.
Ethiopia and Sudan are in a complicated relation since the discussion on GERD and border issue created diplomatic challenge.
The two neighboring countries have been through internal challenge in the recent years. But the conflict is not new, it was there for the last decade.