Following clashes between Orthodox Christians and Muslims in Ethiopia, the United Nations human rights chief is demanding action.
The violence erupted in late April, in the north of the country. 30 people were killed and 100 injured.
The UN's high commissioner for human rights has labelled in incident as "deeply distressing."
Following a land dispute in the Amhara region, the violence began to spread southwards, towards the capital.
It is believed heavily armed "extremist Christians" attacked a Muslim funeral. In further incidents, it's reported that two mosques were burned, and more damaged.
So far, 578 people are believed to have been arrested in connection with similar attacks across Ethiopia.
The UN rights chief made it clear that these atrocities cannot continue.
She said: "To prevent further inter-religious violence, it is crucial that the underlying causes of this shocking violence are promptly addressed."
She is urging survivors, and family members of those killed, to have meaningful and positive conversations within their communities.
Despite these attacks, Ethiopia has seen relative peace in relation to the wider conflicts affecting the country; the federal government declared a ceasefire last month.
Humanitarian aid workers are using the interlude to help those living in Tigray.