The shootings caused panic among the general public in Pedras Negras that also forced a huge law enforcement mobilization.
According to a report from the Attorney General, at around 1330 hours, authorities received information about a shootout between sicarios and military forces in the neighborhoods of Colonia Roma and Centro.
Witnesses stated that the shooting began when Army troops intercepted a convoy of stolen vehicles in the area.
"They are reporting gunshots at Col. Roma and Macro Plaza, please avoid the area, sending forces to the area," is what the prosecutor said in their Twitter account at 1340 hours.
Military forces maintained a cordon around several blocks in the sector, specifically around the streets Saltillo, Guadalajara and Lopez Mateos.
Through the means of social networks, people were warned not to leave their homes due to confirmed shootings.
At approximately 5:00pm other shootouts were reported in the colonia El Mirador, where a safehouse with 3 luxury vehicles containing weapons and ammunition was located, and in Ejido El Cenizo, were 61 kidnapped victims were liberated.
At press time there were no reports of any person killed, injured or detained, although it was confirmed that a soldier had been injured during the conflict.
At the same time people attending an event, Festival del Nacho, were being instructed to stay put inside the perimeter where the event was taking place.
In other news coming out of Piedras Negras:
Mexico army frees 61 kidnap victims in Coahuila.
The Mexican army says it has rescued 61 men who were being held prisoner by a drugs gang near the border with the US.
The captives were found in a house guarded by three suspected kidnappers in the town of Piedras Negras in Coahuila state.
They said they had been abducted from various parts of Mexico and forced to work for organised crime.
Mexico's drugs cartels are frequently accused of kidnapping and of exploiting migrants trying to cross the US border.
They did not say which criminal organisation was involved.
Several different drugs gangs operate in Coahuila state, including the Zetas and Gulf cartels, which have been fighting a bloody battle for control of smuggling routes into the US.