AUSTIN -

Texas Department of Public Safety officers responded to multiple incidents that took place Thursday on the Texas-Mexico border.

According to preliminary information, the first incident occurred early Thursday afternoon, when DPS said a Texas Rangers' boat responded to a "shots fired" call by the U.S. Border Patrol on the Rio Grande River.

After arriving at the scene, DPS said the Rangers observed that the border patrol agents had taken cover inside their boat while pointing across the river toward individuals on the Mexico side, believed to be responsible for the shots fired.

Rangers then launched tear gas rounds in the direction of the individuals in Mexico, who DPS said vacated the area.

Later in the afternoon in a separate incident, a DPS Tactical Marine Unit team was patrolling the river, when they came upon a raft that was nearing the U.S. shore, and observed multiple subjects aboard.

As the TMU team approached, DPS said the subjects abandoned the raft and swam to Mexico. The TMU team seized the raft, which was on the U.S. side and contained several bundles of marijuana, totaling approximately 1,100 pounds, according to DPS.

Around the same time, at approximately 5 p.m., DPS said the Texas Rangers' boat responded to assist with the marijuana seizure incident.

While en route, the Rangers' boat was fired upon from Mexico. DPS officers aboard the Rangers' boat returned fire, at which time the subjects in Mexico vacated the area.

Officials said the TMU patrol vessel was not present at the time of this particular shooting.

DPS said no injuries were reported in all three incidents. Additionally, no charges have been filed in these cases, as all subjects fled into Mexico.

While these incidents occurred in the South Texas area, authorities said the specific locations will not be released at this time for security purposes.

No additional information is available at this time.