TEHRAN, Iran • A stampede broke out Tuesday at the funeral for a top Iranian general slain in a U.S. airstrike, and at least 56 people were killed and more than 200 were injured as thousands thronged the procession, Iranian news reports said.

As the crowds mourned Revolutionary Guard Gen. Qassem Soleimani, more angry calls rose from Iran to avenge his death, drastically raising tensions in the Middle East.

The U.S. continued to reinforce its own positions in the region and warned of an unspecified threat to shipping from Iran in the region’s waterways, crucial routes for global energy supplies. U.S. embassies and consulates from Asia to Africa and Europe issued security alerts for Americans. The U.S. Air Force launched a drill with 52 fighter jets in Utah, just days after President Donald Trump threatened to hit 52 sites in Iran.

Tuesday’s deadly stampede took place in Soleimani’s hometown of Kerman as his coffin was being borne through the city in southeastern Iran, said Pirhossein Koulivand, head of Iran’s emergency medical services.

There was no information about what set off the crush in the packed streets, and online videos showed only its aftermath: people lying apparently lifeless, their faces covered by clothing, emergency crews performing CPR on the fallen, and onlookers wailing and crying out to God.

“Unfortunately as a result of the stampede, some of our compatriots have been injured and some have been killed during the funeral processions,” Koulivand said, and state TV quoted him as saying that 56 had died and 213 had been injured.

Soleimani’s burial was delayed, with no new time given, because of concerns about the crowd at the cemetery, the semiofficial ISNA news agency said.

A procession in Tehran on Monday drew over 1 million people in the Iranian capital.

Mourners attend a funeral ceremony Tuesday for Iranian Gen. Qassem Soleimani and his comrades, who were killed in Iraq in a U.S. drone strike on Friday, in the city of Kerman, Iran.

the associated press