The violence last month in farming villages in Oromia region, in the country’s west, claimed more than 300 lives.
Many were killed in yet another attack two weeks later.
This will be Mr Abiy’s second appearance before lawmakers in less than a month.
While authorities have been quick in blaming a rebel group for the attacks in Oromia, public anger has been directed towards the government with some accusing officials of complicity.
Protests were held in multiple places in recent weeks.
And with violence continuing to rage in several parts of the country, questions are being raised about the government’s capacity to deal with insecurity.
There has been a lull in fighting in a brutal civil war in northern Ethiopia after a humanitarian truce was declared in March.
But widespread conflicts in other places indicate the country is still struggling with violence.
