A man who was stopped from looking at terror Web sites by the owners of an Internet cafe blew himself up with explosives hidden on his body, Morocco's official MAP news agency reported Monday. Four others were injured in the blast.

Police arrested the man's companion, who was slightly injured in the explosion and fled, MAP said, citing the national police.

The explosion occurred in an Internet cafe in Sidi Moumen, a slum on the outskirts of Casablanca, the agency reported.

Two men entered the cafe at 10 p.m. Sunday seeking access to terrorist sites, according to MAP, which cited the Surete Nationale police. When the owner's son forbid them from doing so, one of the men was suddenly blown up by explosives he was wearing.

The owner's son and two others present were slightly injured in the blast, MAP reported.

A series of near simultaneous suicide bombings that killed 45 people, including a dozen bombers, took place in Casablanca in 2003. Since then, this Muslim North African country has made hundreds of arrests.