At least three people are believed to be injured after two gunmen opened fire on a Texas college campus this afternoon. A spokesperson from Lone Star College in Houston confirmed shots were fired between two people - believed to be students - at the North Harris campus and that one of them had been detained.

Police are currently searching a wooded area north of the college for another gunman who fled the building - which is on lock down and said to be out of danger. One of the injured is believed to be the detained gunman and the others are believed to have been caught in the crossfire. Another man was said to have suffered a heart attack.

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Students huddled in corners and went for shelter as gunshots were heard at the North Harris campus of Lone Star college this morning
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ABC affiliate KTRK is reporting that two victims of the shooting suffered multiple gun shot wounds.

They were both conscious when they were brought to the hospital, the station reported, and were being brought in for surgery.

Investigators said a second suspect, a black man aged 18 to 20 years old, fled north of campus. Police are searching a wooded area.

EMS workers were seen carrying stretchers into the library of the building, which is where the shooting is believed to have taken place.

Vicki Cassidy, manager of media relations for Lone Star College System, said: 'We know that shots have been fired and we are in a shelter-in-place situation on the campus.

'It's a pretty chaotic scene at this point in time.'

Student Amanda Vasquez said she hid under the desk when she heard the gun fire. She said many people were shouting and a woman put a chair against the door barricading the 25 people inside.

She called her mom and asked her to call police.

'She didn't believe me, because you never think this kind of thing will happen to you,' Amanda said: 'I was waiting for my English class when I heard about six shots.

'I always thought it was a safe campus, we have police and security everywhere.'

The Harris County Sheriff's Office is on the scene, as well as other law enforcement agencies.

Executive director of Lone Star College Jed Young said: 'It appears to be between two students. There were two students believed to have been shot in crossfire.

'The school is under control, but it has been evacuated. One shooter has also been shot and the shooter is in custody, and the other shooter has fled the campus.'

He said he did not think anyone was killed.

A spokesman for Rick Perry said the governor has been briefed on everything that is known so far, and his thoughts and prayers are with those that have been impacted by the shooting.

One witness told KHOU: 'It's very scary. It's very chaotic. All I can do is stay away from windows and pray.'

She said she had no idea how she was going to get home, but added that she had no wish to remain on campus.

The witness added that officials were trying to lead students and faculty to a cafeteria, but said that she did not feel safe anywhere while the shooter or shooters remain at large.

Four nearby schools in the Aldine Independent School District have also been placed on lock down.

According to their website, the Lone Star College System is the largest institution of higher learning in Houston and is the fastest growing community college system in Texas.

The school has approximately 90,000 students spread over more than a dozen campuses.

More than 10,000 students are at the North Harris campus of Lone Star College, spokesman Jed Young said.