国际英语新闻:4 killed, including U.S. citizen in escalating violence across Egypt

CAIRO, June 28 (Xinhua) -- At least four people were killed and more than 160 injured Friday in clashes between the supporters and opponents of Egyptian President Mohamed Morsi, raising the death toll to seven in one week, as the country is set to witness another mass anti-Morsi protest on June 30.

A U.S. citizen was stabbed to death during clashes between anti- and pro-Morsi protesters in Egypt's northern city of Alexandria, Yahya Moussa, spokesman of Health Ministry, told Xinhua, bring the death toll in the city on Friday to two.

He said that the young American was using a mobile phone camera near an office of the ruling Muslim Brotherhood (MB) when he was attacked by protesters.

The U.S. embassy in Cairo said it was still trying to confirm the news.

The embassy also announced earlier Friday that it will suspend its services on Sunday and Monday our of fear of clashes in nearby areas.

Another one people was killed and five were wounded in a gas cylinder explosion among protesters in a Suez city of Port Said.

Also, one people died Friday in Delta city of Mansoura who was deadly injured in bloody clashes there on Wednesday.