Today's terrorist attack must be condemned and the perpetrators brought to justice. Although the full details of the tragedy have not yet emerged, our immediate thoughts are with the families and friends of those killed and injured in today's attack.
More top news
The country's top defence officer said the force may ignore any order to launch a nuclear attack which is deemed to be illegal.
Navy officials say they have received seven short satellite calls which are though to have come from the submarine.
The President is to meet with with the army commander who put him under arrest as he resists calls for him to stand down.