WPTV.com reports that authorities confirmed that the incident occurred at Shuckers Bar & Grill in Miami's North Bay Village.
About 100 people are believed to have been on the deck at the time of the collapse, Miami-Dade Fire Lt. Eugene Germain told reporters. Authorities are treating 24 victims, three of whom have "critical injuries," Germain said. Officials believe no one is missing.
WSVN.com reported additional details.
Rescue divers are on the scene. Three people are with critical injuries. 24 people are injured and have been transported to Jackson Memorial Hospital.
7News director Tom Tuckwell witnessed the collapsed. He said he had his back to the bay when he heard an enormous roar. When he turned around, he saw people disappearing beneath him.
The Miami Herald reported that the deck collapsed less than an hour after the 9 p.m. ET tip of Game 4, which took place in San Antonio's AT&T Center.
The accident occurred at around 9:45 p.m. The packed outdoor patio deck gave way as up to 100 people were cheering the Miami Heat in their run against the Spurs. Scores of customers fell into several feet of water in the bay in the collapse. All lights went off at the eatery.
"We share our concerns for all who were injured tonight at Shucker's restaurant," Heat guard Dwyane Wade said in his postgame comments.
Heat owner Micky Arison posted a message of support on Twitter shortly after Game 4.
"Awful news about deck collapse at Shuckers," he said. "Wishing anyone injured a speedy recovery."
Shuckers is located roughly seven miles northeast of American Airlines Arena. The restaurant's website pitches "outdoor dining on a dock over Biscayne Bay" and calls itself "the premium name in scenic and casual dining."
The Heat went on to win 109-93 in San Antonio to even the series at two games apiece. LeBron James finished with a game-high 33 points (on 15-for-25 shooting), 11 rebounds and four assists and Wade added 32 points (on 14-for-25 shooting), six rebounds, four assists and six steals.
Game 5 is set for Sunday in San Antonio before the series shifts back to Miami for Game 6 on Tuesday. Top photo via Tom Tuckwell / WSVN