At least two people are dead and 66 injured – 22 seriously – after a gas explosion inside a maternity hospital in Cuajimalpa, said Mexico City's Mayor, Miguel Ángel Mancera.
The explosion occurred when a pipe supplying gas to the hospital burst.
At least 30% of the maternity hospital collapsed in the explosion, Claudia Dominguez of Protección Civil, the city's emergency responders, told BuzzFeed News.
Three people from Gas Express Nieto, which officials said operated the gas delivery truck, were detained. Two are in the hospital.
Site 24 posted this video of the blast:
View this video on YouTube
Se colapsa Hospital Materno Infantil de Contadero en Cuajimalpa a causa de explosión de pipa de gas varios muertos
The explosion occurred at the Hospital Materno Infantil in Cuajimalpa, a borough in Mexico City.
#ÚLTIMAHORA: Se reporta una mujer fallecida tras explosión de pipa de gas en Hospital Materno Infantil de #Cuajimalpa
#FOTOS de la pipa de gas LP que estalló en el Hospital Materno Infantil de #Cuajimalpa FOTOS:@gustavoagis_tv
Protección Civil said the incident was under control and there was no risk of another explosion, Noticieros Televisa reported.
Pablo Puig, who lives less than a mile from the site of the hospital, told BuzzFeed News that "the whole house was shaken up" around 7 a.m. today.
"We thought it was an earthquake," Puig said. "All the windows of the house were flung open."
Diego Puig, another resident who lives nearby said the explosion "woke us all up."
"It was like a bomb or something. It was like an earthquake that was starting, but it never started. We could see smoke from our house. We're very worried, because it's very close to the market," he said.
"My condolences and solidarity for the wounded and for the families of those who perished this morning at the Women and Children's Hospital in Cuajimalpa," Mexico's president said in a tweet.
Mi tristeza y solidaridad a los heridos y familiares de quienes perdieron la vida esta mañana en el Hospital Materno Infantil de Cuajimalpa.
Several people were transported to other hospitals in the city.
#FOTOS Momento del traslado de heridos del Hospital Materno Infantil de #Cuajimalpa tras explosión de pipa de gas
Footage on Milenio Television showed several people with severe burns being treated in a number of ambulances.
A woman who appeared to be wearing scrubs and who had debris in her hair walked in a daze, supported by a uniformed official.
Rescue crews are searching for people trapped in the rubble.
Protección Civil del DF afirmó que trabajan en el rescate de personas que pudiera estar atrapadas entre los escombros
La @PoliciaFedMx realiza labores de rescate y búsqueda en Hospital Materno Infantil #Cuajimalpa . Información al 088.
#FOTOS de los servicios de emergencia que atienden explosión e incendio de pipa de gas en #Cuajimalpa
This is a developing story, please check back here or at BuzzFeed News on Twitter for updates.
There are at least two people dead in the explosion, according to Adrián Rubalcava, chief of government for the borough of Cuajimalpa. An earlier version of this post cited Rubalcava saying seven people were dead.