Islamic militants in Somalia have threatened to “come into Kenya” if Kenyan forces do not leave Somalia, according to an online message posted on a jihaddist website.

The message was attributed to Sheikh Ali Mahmud Ragi, a spokesman for al Shabaab, an Islamic extremists group that the United States views as a terrorist organization. Kenyan forces crossed into Somalia to pursue al Shabaab fighters after the recent abduction of tourists and aid workers in Kenya heightened tensions in East Africa.