Mexico President Andrés Manuel López Obrador promised a thorough investigation regarding the train overpass that collapsed in Mexico City on Monday. The tragic incident killed at least 24 individuals and injured about 79 people, Bloomberg reported.

The said train or railway overpass collapsed on Monday around 10:30 in the evening. Videos of the incident surfaced on social media showing a train car dangling mid-air on the road near the Olivos station. Mexican City mayor Claudia Sheinbaum noted that the accident might be caused by a "support beam" giving way.

Mexico President Expresses Sympathy

"A hug to all the people of Tláhuac, to all those who are suffering from this accident," USA Today quoted Lopez Obrado. The Mexican president, in a press conference, ensured that constant information related to the accident will be available.

Lopez Obrador is one of Mexico City's former mayor. Reuters also noted that the city has been governed by the allies of the president since the turn of the century.

Lopez Obrador also went to the area where the trail overpass collapsed, accompanied by officials involved in the construction and maintenance of the metro line.

Bloomberg noted that the incident will be investigated by the Attorney General's Office, with the help of an international agency. On Tuesday, Lopez Obrador said in his briefing that his administration would not hide from the public anything about the incident that killed several Mexicans.

The Metro Line 12 was completed in 2012. The said line runs underground and on elevated structures on the outskirts of Mexico City.

Victims of the Incident

One of the injured survivors shared with Reuters that she heard a loud noise as the lights went out. Identified as Monserat, 26 years old, the survivor emphasized that everybody screamed, and the passengers fell on top of each other.

"I want justice for my husband because a simple apology is not going to bring him back to us," a wife of one of the victims exclaimed in USA Today. Meanwhile, more relatives of the victims have also expressed their anguish on the incident as most of them described that the victims were the breadwinners of their family.

Other Incidents

Apart from the overpass that collapsed, the said train or metro rail transit had previous episodes of anomalies. In 2014, the Golden Line's service was closed by Mexico City officials after they discovered that twisted rails and damaged ties are putting the lives of the passengers in danger.

In January, Sheinbaum shared that the control room of the train transit had fire affecting its operation until mid-February.

Meanwhile, the leader of the National Union Workers, Fernando Espino, shared in a local news outlet that the structure of the train overpass is less than a decade. Espino added that situations like collapsing should not be suffered by the new site. "There must have been indications that the beams were flexing," said Espino.

As the train overpass collapsed in Mexico City, the incident has led family members of the victims frustrated outside the hospitals as they await information on their relatives.

WATCH: Mexico City metro overpass collapse kills 23 - from BBC News