Defense Secretary Delfin Lorenzana. Mark Demayo, ABS-CBN News/ File

MANILA- The Philippines will buy 16 Black Hawk helicopters from the Sikorsky Aircraft Corp for P12.67 billion ($240 million), shunning cheaper Russian equipment due to U.S. sanctions on Russian military exports, Defense Chief Delfin Lorenzana said Friday.

The Philippines had initially agreed to buy 16 Bell 412 helicopters from Canada but the deal was scrapped in February after Canada expressed concern they could be used to fight rebels.

The Philippines then considered several other helicopters including Sikorsky Aircraft's S-70 Black Hawk, Russia's Mi-171, South Korea's Surion and Agusta Westland's AW139.

Lorenzana said the Air Force would sign a contract early next year for the 16 Black Hawks, even though the Russians offered the second lowest price.

"But it is very difficult to pay them because of the US sanctions," Lorenzana told reporters at a security forum.

US President Donald Trump signed a law last year punishing Russia for its 2014 annexation of Crimea from Ukraine, its support for Syria's government and its suspected meddling in the 2016 US presidential election, an accusation the Kremlin has denied.

US allies, like the Philippines, buying weapons and equipment from Russia, the world's second largest arms exporter, would also be penalized and could see the transfer of those arms disrupted.

The S-70 is classified as a utility helicopter.

The Philippine Air Force is also seeking to acquire up to 10 attack helicopters next year.

The Philippines is spending P300 billion ($5.6 billion) over the next 5 years to upgrade its defense capability, replacing World War II-era warships and Vietnam War-vintage fighters and helicopters.

It recently acquired 12 light fighters from South Korea, logistics ships from Indonesia, and armored vehicles and ship-borne missiles from Israel.