Xinhua world news summary at 1530 GMT, Feb. 16

At least 35 Islamic State (IS) militants have been killed in clashes with Syria's main Kurdish armed group in the town of Ayn al-Arab, a monitoring group said on Monday.

The clashes on Sunday in the countryside of Ayn al-Arab, also known as Kobane, also left four fighters of the Kurdish People's Protection Units (YPG) killed, said the Syrian Observatory for Human Rights. (Syria-Kurds-IS)

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CAIRO -- Egypt conducted airstrikes on Islamic State (IS) positions in Libya on Monday, a day after the militant group released a video purporting to show the beheading of 21 Egyptians in the neighboring country.

"Your armed forces on Monday carried out focused airstrikes in Libya against Daesh camps, places of gathering and training, and weapon depots," the military said in a statement broadcast on national TV, referring to the IS group. (Egypt-Libya-IS)

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LAGOS -- Nigerian troops have enhanced their crackdown on Boko Haram bases in northeastern part of the country after killing several militants, a military spokesperson confirmed Monday.

Spokesperson for the Nigeria Defense Headquarters Chris Olukolade said in statement reaching Xinhua that troops in a military operation spearheaded by highly coordinated air assaults have completed the mission of clearing terrorists from Monguno and environs this morning. (Nigeria-Boko Haram)

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COPENHAGEN -- Two men have been arrested for aiding the alleged perpetrator in the weekend's shootings in the Danish capital of Copenhagen, authorities said on Monday.

The men are accused of having helped the gunman "with word and deed" in the attacks at a cultural center and a synagogue, the Copenhagen Police said in a statement on Monday. (Denmark-Shootings) Endi