NABLUS, West Bank, June 2 (Reuters) - The Israeli army blew up several cement barriers in a raid in the West Bank town of Nablus on Saturday, causing minor injuries and damage to storefronts in a commercial center, local witnesses said.

The barriers were used by Palestinian militants to prevent Israeli vehicles from driving through the streets, the witnesses said.

Nihad Masri, the acting mayor of Nablus, said a few people sustained minor injuries from the blasts.

The Israeli army had no immediate comment.

Palestinian Information Minister Mustafa Barghouthi said the army's action was "a new crime coming in the context of Israeli escalation against the Palestinian Authority and people".

Earlier on Saturday, Israeli troops arrested four Palestinians in the Maghazi refugee camp in the Gaza Strip, security sources said. They said the four men were brothers, but did not give their affiliations.

The Israeli army was checking the report.

(Reporting by Atef Sa'ad in Nablus and Nidal al-Mughrabi in Gaza)

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