All of the news sites we can't link to are reporting that the Malian army & Islamists are fighting near the de facto border...

In R**ters - Mali army fires warning shots to halt Islamist advance

The G**rdian is reporting that the Malian Army has gone on the offensive near Mopte. The article ends with this -

The main concern if the Malian army begin fighting the Islamists is the potential for a backlash in the south," said the diplomatic source. "You could find terrorist cells activated around the country."

Google Mali if interested in reading articles...