Up to eight people have been reported dead in a shooting at a Texas high school, which is on lockdown.

One person is in custody after the attack at Santa Fe High School, which is about 40 miles (65km) south of Houston, according to school officials, the BBC reported.

The school district has confirmed people were injured in an ‘active shooter’ incident as classes began.

Multiple people were killed on Friday in a shooting at a high school in Santa Fe, Texas, a law enforcement source said, in the latest gun violence in a country still shaken by the massacre at a Florida high school in February, the Reuters reported.

The law enforcement source said the suspected shooter was in custody after the attack at the school about 30 miles (48 km) southeast of Houston. Local media reported at least eight people were killed.

The sheriff’s office for nearby Harris County said its deputies were assisting with a ‘multiple-casualty incident.’ ‘This is no longer an active shooting situation and the injured are being treated,’ the sheriff’s department said on Twitter.

The school district in Santa Fe, said the situation was ‘active, but has been contained.’ Local media reported that a suspect was in custody.

US President Donald Trump wrote of the shooting on Twitter: ‘Early reports not looking good. God bless all!’

The latest such incident at a US school underscored a national debate over gun control and gun rights that has intensified after an assailant killed 17 students and staff on Feb. 14 at Marjory Stoneman Douglas High School in Parkland, Florida.