CARACAS, Venezuela (AP) — Most of Venezuela’s capital is without power following a failure at an electrical plant that is paralyzing metro lines.

Energy Minister Luis Motta Dominguez said on Twitter that Tuesday’s outage has left 80 percent of Caracas without electricity, as well as parts of neighboring Miranda and Vargas states.

He offered no further details but said authorities were working to restore power.

Local news outlets report many Venezuelans are walking to work because the metro is shut down.

The outage comes a day after the power went off at a socialist party gathering as the deputy leader was live on television urging delegates to elect President Nicolas Maduro as leader of the country’s ruling political party.

Maduro later called the brief outage an act of “sabotage.”