Police in the Mexican border state of Tamaulipas wounded a pregnant 14-year-old US citizen after the truck she was in failed to obey police commands to stop.

The Tamaulipas state prosecutor’s office said late on Monday that the teen and her four-month-old foetus are not in danger of dying.

The office said the shooting happened around midnight on a Reynosa street near the international bridge leading to Pharr, Texas.

State police officers approached the girl and a boy who was driving the truck outside a convenience store, and ordered them to stop.

The driver took off, and police fired at the truck’s tyres to stop the vehicle. When it stopped, the driver fled and the girl was found wounded in the belly, and taken to a hospital.

The prosecutor’s office said the state police officers would be questioned in the case.

The US embassy in Mexico said it was aware of reports that an American citizen had been shot in Reynosa, but could not provide further details.

Meanwhile, inquiries continue into the deaths of three American siblings found shot to death outside the nearby city of Matamoros in late October.

The parents of Erica, Alex and Jose Angel Alvarado Rivera of Progreso, Texas, said armed men dressed in uniforms identifying them as “Grupo Hércules”, a special police unit in Matamoros, took them and Erica’s boyfriend from a taco restaurant near the border town of El Control on 13 October. Their bodies were found on 29 October, in a rural area outside Matamoros.

Grupo Hércules is made up of former soldiers and marines who have been vetted by state police to provide security for city officials and target crime in high-risk areas.