Ghani made the statement while addressing the nation on its 100th Independence Day.
The latest incident comes a day after 63 people were killed and nearly 200 were wounded in a suicide attack on a wedding in Kabul city.
Jalalabad is the scene of frequent bomb attacks, and the surrounding terrain is home to both Taliban fighters and the Islamic State group's local affiliate.
Mayhem from Afghanistan's war continues to wreak havoc on Afghans every day, even though the US and the Taliban are in final negotiations for a deal that would see US troops begin to quit Afghanistan and could potentially lead to a reduction in violence.
A series of bombings struck restaurants and public squares on Monday in the eastern Afghan city of Jalalabad as the country marked the 100th anniversary of its independence.