Xinhua world news summary at 0030 GMT, April 11

About 25 fighters of the Shiite Houthi group were killed and scores of others wounded when a booby-trapped car struck a security post in Yemen's southeastern province of Shabwa on Friday, a government official told Xinhua.

A suspected al-Qaida attacker detonated his booby-trapped car at a security post held by hundreds of Houthi gunmen in Bayhan region of Shabwa province, said the official of Shabwa's local government who asked to remain anonymous. (Yemen-Bombing)

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PANAMA CITY -- The seventh Summit of the Americas, with the attendance of more than 30 heads of state, will be opened here amid tightened security Friday night.

Official data show that over 5,000 armed forces have been deployed to guarantee the safety of the Summit. (Panama-Summit-Security)

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UNITED NATIONS -- The humanitarian situation is getting worse by the hour in Yemen, said a UN spokesman Friday.

According to the World Health Organization (WHO), violence killed 643 people and injured 2,226 between March 19 and April 6, UN spokesman Stephane Dujarric said in a daily briefing here. (UN-Yemen-Situation)

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WASHINGTON -- The United States is "gravely concerned" about the release on bail of alleged mastermind of Mumbai terrorist attack in 2008, the State Department said Friday.

Pakistan on Friday released Zakiur Rehman Lakhvi, who is a leader of Jamaat-ud-Dawa group and among the seven accused Pakistan has taken into custody after the attacks in India's Mumbai that killed 166 people and injured many others. (US-Mumbai-Attack) Endi