RTFA: http://edition.cnn.com/2009/WORLD/meast/01/27/gaza…

(CNN) — Palestinians activated an explosive device and a Palestinian was killed by Israeli helicopter fire early Tuesday in the first incidents of violence since last week’s Mideast cease-fire, according to Hamas and Israeli army sources.

The explosive device was detonated against an Israeli army patrol along the border just north of Kissufim crossing about 8 a.m. Tuesday.

In the fighting, an Israeli soldier was killed and three others were wounded, according to the Israeli military.