Colonial Pipeline says it has "initiated the restart" of operations at the pipeline affected by a cyberattack as a wave of panic-buying empties out many gas stations across the Southeast.

An attack shuts down Colonial Pipeline, a major transporter of gasoline along the East Coast. A security analyst says the event shows the vulnerability of key elements of the nation's infrastructure.

Motorists near Colombia's border with Venezuela used to opt for cheaper, smuggled gas from the neighboring country. Now the tables have turned.