Shortages due to panic buying could last for up to two weeks, analyst says.

Colonial Pipeline said Thursday it has restarted much of its pipeline with deliveries expected in regions in the southeastern U.S. that had experienced gasoline shortages although one analyst said fuel supplies will remain tight for up to two weeks in states where pumps had run dry.

The company restarted operations on its pipeline Wednesday after a cyberattack forced it to shut down the crucial fuel line that delivers nearly half the gasoline to the East Coast.

“Colonial Pipeline has made substantial progress in safely restarting our pipeline system and can report that product delivery has commenced in a majority of the markets we service,” the company said in a statement Thursday. “By mid-day today, we project that each market we service will be receiving product from our system.”

Stretches of the pipeline running between Houston and Selma, S.C., and Baltimore and its terminus in Linden, N.J., are already operating, the company said. The stretch running between North Carolina and northern Virginia is expected to come online later today, the company said.

Colonial’s announcement that it had succeeded in restarting much of the pipeline came the morning after it had begun the process, though drivers will still need to wait for trucks to deliver the fuel from the pipeline's storage terminals to gas stations. The Biden administration has scrambled to help ease a fuel shortage that has spread throughout the southeast as drivers drain gasoline from gas pumps faster than delivery trucks can bring in fresh supply.