Xinhua world news summary at 0030 GMT, June 1

ABUJA -- At least 25 vehicle passengers were abducted by gunmen in Nigeria's northwestern state of Kaduna on Thursday, according to a local transport union. (Nigeria-Abduction)

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OTTAWA -- Canada will impose retaliatory tariffs on up to 16.6 billion Canadian dollars (12.8 billion U.S. dollars) worth of U.S. steel, aluminum and other products, Canadian Foreign Minister Chrystia Freeland said on Thursday. (Canada-US-Tariff)

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NEW YORK -- U.S. Secretary of State Mike Pompeo said on Thursday that a senior official of the Democratic People's Republic of Korea (DPRK) was planning to travel to the White House to deliver a letter from the DPRK's top leader Kim Jong Un to President Donald Trump. (US-DPRK-Visit)

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ABUJA-- A landmine by terror group Boko Haram has killed five soldiers in Nigeria's northeastern state of Borno, the spokesman of the army said.

The soldiers, driving in a military vehicle, ran on the explosive mine in Gworza area of Borno during a patrol, according to Texas Chukwu, the army spokesman, late Thursday. (Nigeria-Landmine)

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WASHINGTON -- U.S. Commerce Secretary Wilbur Ross said on Thursday that U.S. tariffs on steel and aluminum imports from the European Union (EU), Canada and Mexico will take effect from Friday.

U.S. President Donald Trump has decided not to extend the temporary steel and aluminum tariff exemptions for these three key trading partners, Ross told reporters at a conference call. (US-EU-Tariff) Enditem