<p>At least 45 people were killed in a bus accident in Bulgaria on Tuesday, the official news agency BTA reported.</p>.<p>Seven people with burns were saved and rushed to an emergency hospital in the capital, Xinhua news agency quoted the BTA report as saying.</p>.<p>Among the victims were children.</p>.<p>The accident took place at about 2 am on a highway about 40 km south of Sofia.</p>.<p>The cause of the tragedy has yet to be determined.</p>
<p>At least 45 people were killed in a bus accident in Bulgaria on Tuesday, the official news agency BTA reported.</p>.<p>Seven people with burns were saved and rushed to an emergency hospital in the capital, Xinhua news agency quoted the BTA report as saying.</p>.<p>Among the victims were children.</p>.<p>The accident took place at about 2 am on a highway about 40 km south of Sofia.</p>.<p>The cause of the tragedy has yet to be determined.</p>