Updated

A high school in Texas was on lockdown, and a suspected gunman was in police custody after at least two students were injured in a reported shooting that unfolded outside the building early Monday, according to authorities.

Officers responded to Lamar High School in Arlington to investigate multiple reports of a shooting and secured the scene, the Arlington Police Department said.

Two students suffered injuries and were receiving medical care, police said in a statement. No updates on their conditions were immediately available.

The suspected shooter was taken into custody shortly after officers arrived at the scene, police said, adding that no details about the suspect were immediately available. Police do not believe the suspect ever entered the school.

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police cars outside Lamar High School

Lamar High School in Arlington, Texas, was put on lockdown early Monday after a shooting was reported outside the school building, police said. (FOX4 Dallas-Forth Worth KDFW)

Police said more information about the shooting would be released later.

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police cars outside Lamar High School

Police said that officers took the suspect into custody shortly after arriving at the scene. (FOX4 Dallas-Forth Worth KDFW)

Police said the incident happened around 6:55 a.m. outside the school building, police said. Not all students were on campus at the time of the shooting since the school day does not begin until 7:35 a.m.

At least one male student was shot and was in critical condition, according to FOX4 Dallas-Fort Worth. A female student reportedly suffered injuries that were not considered life-threatening.

Parents were asked not to come to the school during the lockdown since they will not be allowed on campus. Police said the entire school building must be cleared before the lockdown is lifted.

Students and staff will be sent home once the lockdown is lifted, Arlington school district officials said, according to the station.

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Arlington is located about 28 miles west of Dallas.

This is a developing story; check back for updates.