Latvian Prime Minister Resigns After Supermarket Collapse That Killed 54

RIGA, Latvia (AP) - Latvia's prime minister has resigned after accepting political responsibility for the collapse of a supermarket roof in the capital that killed 54 people and wounded at least 40 others.

Valdis Dombrovskis was the longest serving prime minister in Latvia's history.

Police have opened a criminal investigation into the cause of last week's tragedy. Possible explanations for the disaster include a flawed design, substandard construction materials, and corruption.