Israel’s military says it has reprimanded a soldier who posted photos of himself naked — with a rifle concealing his genitals — and making derogatory comments about Arabs on social media sites.

The soldier was identified on Electronic Intifada as American-Israeli Osher Maman of the IDF’s Golani Brigade, who had a criminal record in the United States.

Capt. Eytan Buchman, a military spokesman, described the incident as “severe” and said Wednesday that the soldier’s conduct is still being investigated.

The soldier published the material on his Facebook, Twitter and Instagram accounts. The images were then published on Electronic Intifada, a pro-Palestinian website. It quoted the soldier’s Facebook status as saying he just joined the army “to beat up terrorists.” The Instagram photos were later removed.

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It was the latest in a string of incidents in which soldiers have posted inappropriate material online.

Last week, a photograph of a child caught in the crosshairs of a sniper’s rifle posted to photo-sharing website Instagram stirred controversy on the Internet.

The photo, taken January 25 and posted by 20-year-old soldier Mor Ostrovski on his private account, shows the view through a scope of a rifle aiming at the head of a young boy in what appears to be an Arab village. The photograph was taken down on Saturday.

Palestinians say it reflects widespread contempt that Israeli soldiers have for them.