The man who attacked people in an Ohio restaurant with a machete Thursday and later was fatally shot by a policeman was from the West African nation of Guinea, an FBI spokesman said.

Spokesman Todd Lindgren said in a statement Monday that it would be premature to discuss what motivated the attack or details of the investigation.

Authorities haven't released many details about the attacker, 30-year-old Mohamed Barry, or his background. A police spokesman said information connected to the registration of the car Barry drove triggered an alert that required contacting the local terrorism task force, which contacted the FBI.

The Columbus police chief has said Barry wasn't known to police.

Four people were hurt in the assault at Nazareth Restaurant and Deli, on the north side of Columbus.