Fighting in Sana'a escalates with heavy explosions.

Fighting in the Yemeni capital of Sana'a continues with reports of heavy explosions and gunfire, particularly machine guns and mortars. President Ali Abdullah Saleh's presidential guard also clashed with local tribesmen northwest of Sana'a, signifying an escalation in the conflict.

Travellers are reminded that many countries continue to advise their citizens to avoid travelling to Yemen where conditions remain unstable.

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