GAZA, April 6 (Reuters) - Hamas and Fatah militants clashed in the Gaza Strip on Friday and at least two militants and a young boy were injured, Palestinian security sources and local residents said.

Tensions are running high in Gaza despite the formation of a unity government on March 17 between the ruling Hamas movement and President Mahmoud Abbas's Fatah faction.

Friday's gunbattle in the Gaza town of Khan Younis left at least one member of Hamas and one member of Fatah injured, local residents and rescue workers said.

A hand grenade that was thrown during the fighting slightly injured a young boy. The house of a Hamas member was also torched.

At least three Palestinians have been killed in factional fighting since the unity government was formed.

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