Updated

Authorities in two East African countries say they are on alert for possible terror attacks from Somali militants who have vowed to avenge the presence of African Union troops in Somalia.

Kenyan authorities say police foiled a planned terrorist attack in the coastal city of Mombasa after they intercepted a car packed with explosives a week ago. The FBI is aiding the investigation.

Two men who were charged in court Wednesday with terror-related offenses. Kenya's Internal Security Minister Joseph Ole-Lenku says security in the country has been increased following the arrests.

In Uganda, police spokesman Ibn Ssenkumbi says Somali militants may be planning to launch attacks on fuel trucks.

Uganda and Kenya contribute to African Union troops bolstering Somalia's weak government against an insurgency by al-Qaida-linked al-Shabab militants.