Japan "resolutely denounces" attacks on two oil tankers near the Strait of Hormuz, regardless of who is responsible for them, Prime Minister Shinzo Abe said Friday after speaking with U.S. President Donald Trump by phone.

Abe, who returned to Tokyo in the morning from a two-day visit to Tehran, did not name any country as a suspect in the attack, but the United States has already pointed to Iran.

Amid escalating tensions in the Middle East, Abe instead said Japan will work closely with the United States and the international community for peace and stability in the region.