Lebanon’s president has called a two-week state of emergency and declared a period of mourning after at least one huge explosion rocked the capital, Beirut, killing at least 78 people and wounding 4,000 others. Many were missing Wednesday as rescue workers combed through the rubble. Lebanon’s interior minister says the blast in the city’s port area appears to be have been caused by ammonium nitrate stored at a warehouse but how it happened is still not clear – with some signs pointing to an accident triggered by a fire and others to the possibility of an attack. Among the injured was Beirut reporter Anchal Vohra, whose home was damaged in the explosion. After getting treatment, she filed this report.