Beijing (CNN) Four people have died after they were swallowed up by a massive sinkhole in a Chinese city, despite desperate rescue efforts to save them.

According to state media, the sinkhole opened up around 2:30 p.m. Sunday in Dazhou, Sichuan province. Dramatic video from the scene showed people suddenly plunging through the pavement as it collapsed beneath them.

Two victims died after being pulled from the pit and rushed to a hospital, state media said. They were reportedly married only days before.

Efforts to rescue the other victims, a father and his young son, were unsuccessful, with the two found dead on Tuesday afternoon.

Four people were swallowed by the sinkhole when it opened up.

Rescuers believed the final two were trapped around 10 meters (32 feet) underground, some two meters deeper than local rescuers' equipment could reach.

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