Remains of the missiles which were used to attack an Aramco oil facility, are displayed during a news conference in Riyadh, Saudi Arabia September 18, 2019.

DUBAI — Drone and missile debris recovered by investigators at the Saudi Aramco attack site is proof of Iranian culpability, a Saudi defense ministry representative said Wednesday, but he stopped short of saying Tehran launched the strike.

Twenty-five drones and missiles were used in Saturday's predawn attack that forced the Saudis to shut down half of the country's oil production, Saudi coalition spokesman Col. Turki al-Maliki said during a press briefing in Riyadh.

The briefing focused on projectile debris laid out on tables as well as aerial and close-up photos of Aramco's damaged facilities.

Al-Maliki said the drones used in the attacks — which had been claimed by Yemen's Houthi rebels — were Iranian delta-wing unmanned aerial vehicles, and that they came from the north to the south. He then rolled surveillance camera footage of what he said was a drone's approach to the Abqaiq oil facility.

NBC News has not verified the Saudi claims that the items displayed are remnants from Saturday's strike.

Speaking on behalf of the defense ministry, al-Maliki pointed to Shiite-dominated Iran — a longtime adversary of the Sunni monarchy — and "the destabilizing role Iran and its proxies play in the region."

Asked directly and repeatedly by a reporter whether the attacker was Iran, al-Maliki didn't answer, saying only, "I am controlling the conference," before moving onto another question.

Responding to another reporter on the topic of how Saudi Arabia would respond to the attacks, the spokesman said, "We are just a military tool. ... That is a decision for the political authorities."