MEXICO CITY, Aug. 3 (Xinhua) -- Mexico will help the relatives of a Central American man who was killed by police officers regularize their immigration status, the National Institute of Immigration (INM) said on Saturday.

The INM said in a press release that they will provide legal advice to the relatives of a Honduran migrant so that they can stay in Mexico for humanitarian reasons. It will also provide assistance to the group of immigrants who witnessed the incident.

On Wednesday night, Mexican police killed a man who was trying to cross into the U.S. state of Texas with his daughter in Saltillo, the capital of the northern state of Coahuila.

According to Coahuila's prosecutor's office, the officers were investigating drug dealers in the area near a migrant shelter where the father and his daughter rested before the incident.

The circumstances of the death are still not clear. An early report by prosecutors stated that the officers shot down the man after he had taken out his own gun and shot at police.

However, prosecutors later said that the agents were chasing drug dealers who fired at them and mixed with a group of about 10 migrants who were waiting for a train, including the Honduran migrant and his daughter.

The prosecutor's office said that six officers are being investigated for the man's death.

Mexican President Andres Manuel Lopez Obrador on Friday instructed officials to investigate the killing.