The Associated Press reports: Two men with explosives were arrested trying to enter the city of Gao on Saturday, the Malian military said, a day after a suicide bomber blew himself up in an attack that has fueled fears of a militant insurgency in northern Mali.

The two suspected jihadists were in Malian military custody after being arrested at 7 a.m. on a road that leads into northern Mali’s largest city, said military spokesman Modibo Traore.

“The men were stopped at a checkpoint on the road from Bourem,” Traore said of a village that is northwest of Gao.

While Friday’s attack killed only the bomber, it has raised concerns about the future strategy of the militants, who initially appeared to put up little resistance to the French and Malian military advance.