Suicide bombing in northern Mali may signal shift by militants

Islamic extremists driven from cities by French-led forces may be adopting guerrilla tactics. One Malian soldier is injured in the attack outside Gao.

JOHANNESBURG, South Africa — A suicide bomber blew himself up at a military checkpoint outside the northern Mali city of Gao on Friday, in the first sign that Al Qaeda-linked militias may be adopting new tactics since being driven back by a French-led invasion.