Two presumed criminals were shot and killed by employees of a private security company at a bus station in Mexico City on Tuesday.

Mexico City Security Minister Omar García Harfuch said on Twitter that cash-in-transit personnel responded with their own gunfire when they were targeted in an attempted robbery at the Central del Sur bus station in the southern borough of Coyoacán.

“Two probable culprits lost their lives,” he wrote.

The Mexico City Attorney General’s Office said that two others were wounded. The newspaper El Financiero identified them as employees of the cash-in-transit company Transval.

As many as four alleged criminals reportedly participated in the attempted robbery. Mexico City authorities didn’t say whether police made any arrests.

Videos posted to social media show people running for cover and hiding under seats in the bus station as gunshots ring out.

In a separate incident later on Tuesday, two people were shot in the parking lot of a McDonald’s restaurant in the Mexico City neighborhood of Juárez.

A 16-year-old youth and a 46-year-old man were in a luxury SUV when they came under attack, according to the Mexico City Security Ministry.

Both were taken to hospital for treatment. The man later died, the news magazine Proceso reported.

Two men, both aged in their 30s, were detained in connection with the attack. A taxi driver told the El Universal newspaper that they had been chasing and shooting at the vehicle from a motorcycle.

With reports from El Financiero, El Universal and Proceso