Some of California's major sports teams have pledged on Twitter to help the victims and families affected by a devastating fire that tore through an Oakland warehouse party Friday night, killing at least 33 people.

The Oakland Raiders said it would join Oakland Athletics to match donations up $30,000.

The NFL team also announced it would observe a moment of silence prior to its game against the Buffalo Bills at Oakland-Alameda County Coliseum on Sunday.

We have teamed up with the @Athletics to aid those affected by Friday’s Oakland warehouse fire.



To help donate: https://t.co/MZjQOQlKA6 pic.twitter.com/DHXcEJ6SHe — OAKLAND RAIDERS (@RAIDERS) December 4, 2016

The @RAIDERS are joining us in relief of the #OaklandFire and will also be matching and donating up to $30,000. https://t.co/xYHSzfb3Lz pic.twitter.com/V4HXVFaqJ6 — Oakland A's 🌳🐘⚾️ (@Athletics) December 4, 2016

The San Francisco Giants said it would also support the fund, while the Golden State Warriors tweeted the NBA team would donate $50,000 to the Unity Council.

"When a tragedy of this magnitude hits this close to home, we feel it's imperative to do our small part to help our community and those impacted," Rick Welts, Warrior president and COO, said in a statement.

Our thoughts are with the #OaklandFire victims. We will support the @Athletics fund & urge everyone to donate https://t.co/BT2CQ7GliL — SFGiants (@SFGiants) December 4, 2016

Warriors to donate $50,000 to support those impacted by Oakland fire. News release: pic.twitter.com/boxu0pZdTu — Warriors PR (@WarriorsPR) December 4, 2016

It's unclear how the fire broke out in the warehouse, but authorities said at least two dozen people remain missing.

There were no sprinklers inside, and the flames left the crowded building dangerous to enter, delaying the relief effort. Search and rescue operations were expected to resume Saturday afternoon after firefighters tried to stabilize the structure.

We're here to help. If you need information about a loved one in last night's fire, please call 510-382-3000. @ACSOSheriffs #oaklandfire — City of Oakland (@Oakland) December 3, 2016

"It was just a labyrinth of little areas. We knew people were in there, and we were trying to get them out. But it was just a labyrinth," Oakland deputy fire chief Mark Hoffmann told reporters Saturday afternoon.

"Something as simple as a cigarette could have started this," Alameda County Sheriff's Sgt. Ray Kelly said. "It appears that either you got out or you got trapped inside."

The Associated Press contributed reporting.