Tristan Velazquez/AP via CNN Newsource

By Mauricio Torres

(CNN) — A gas truck explosion that generated a “shock wave” in Mexico City on Wednesday killed at least four people and left 90 injured, according to the city prosecutor’s office.

Those who were injured were taken to hospitals in the city, many in a a serious condition, Mexico City Mayor Clara Brugada said in a press conference.

Images shared on social media showed flames shooting high into the air as people screamed and ran from the scene in the Iztapalapa borough. Another video showed large plumes of smoke billowing from the truck as emergency workers tried to extinguish the fire.

The explosion generated a “shock wave” that damaged 32 nearby vehicles, the Mexico City Prosecutor’s Office said late on Wednesday.

According to

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