More than 125 people died Saturday night after a professional soccer match in Malang, Indonesia, when fans rushed the field, prompting the police to fire tear gas into tightly packed crowds, causing many to be trampled, according to local officials.

After the Arema football club lost 3-2 to Persebaya Surabaya, dozens of fans rushed the field at Kanjuruhan Stadium, Arema’s home.

The unrest prompted the police to fire tear gas, which caused panic, Inspector General Nico Afinta, the East Java Police chief, said at a news conference. There was confusion about the death toll — the government-backed National Human Rights Commission said 153 people died, while the Arema football club put the number at 182.

Both figures would make Saturday’s match among the deadliest episodes in the history of soccer. In 1964, at least 300 people died in Peru after an unpopular decision by a referee at a soccer game touched off a riot at the country’s national stadium.

In a televised speech to the nation, President Joko Widodo said he had asked the national police chief to do a thorough investigation into what happened. He said he had also ordered the minister of youth and sports, the national police chief and the chairman of Indonesia’s football association to evaluate security at soccer matches.

“I regret that this tragedy occurred,” Mr. Joko said. “And I hope this is the last football tragedy in the country.”
Hundreds of people ran to one exit gate in an effort to avoid the tear gas. Some suffocated and others were trampled, killing 34 almost instantly.

Soccer violence has long been a problem for Indonesia. Violent, often deadly rivalries between major teams are common. Some teams even have fan clubs with so-called commanders, who lead large groups of supporters to matches across Indonesia. Flares are often thrown on the field, and riot police are a regular presence at many matches. Since the 1990s, dozens of fans have been killed in soccer-related violence.