Updated May 4: Revised throughout to include additional details.

A 20-year-old North Lake College student was killed at the Irving school by a man who was stalking her, her family says.

Janeera Nickol Gonzales (Google+)

Janeera Nickol Gonzalez was found shot to death in a common study area inside the Performance Hall building around noon Wednesday, shortly after the school went into lockdown because a shooter was reported on campus.

Officers found the body of the gunman, 21-year-old Adrian Victor Torres, inside a locker room shower stall in Building F, which is adjacent to the North Lake Aquatic Center. He had what appeared to be a self-inflicted gunshot wound, police said.

Gonzalez's mother, Lucia Gonzalez, told WFAA-TV (Channel 8) that her daughter didn't see Torres as a threat.

"He had been stalking her for quite a while, but she didn't make anything of it," she said.

Lucia Gonzalez said her daughter hadn't dated Torres and that the two weren't friends. She told KTVT-TV (Channel 11) that Torres had left North Lake to attend school elsewhere, but had returned to the school in the past few weeks.

Witnesses told the family that Torres had walked up to Gonzalez and yelled at her before shooting: "You know who I am, and you know why I am here."

The Gonzalezes said their daughter, who was studying kinesiology, was going to graduate in the coming weeks. They went to North Lake to look for her when she didn't respond to text messages Wednesday afternoon.

"She was the best daughter any mother could have. The best girl, the best of everything," her mother said.

"We're not gonna see her again. She was a harmless girl," said her father, Juan Gonzalez. "She was very sweet."

You took our angel today, my sister my best friend, she never did anything to anyone or hurt nobody we love you mija

rip Janeera Gonzalez pic.twitter.com/lHwgflH36L — El Tejas (@usualsuspect214) May 3, 2017

Last year, Gonzalez talked to a fellow student about being the first person in her family to attend college. She was accepted to the University of North Texas but ultimately enrolled at North Lake.

Janeera Gonzalez (via Phhhoto)

"I faced reality, and it was I just didn't have the money," she said.

Gonzalez said that she felt overwhelmed at first because there was no one to guide her through the many choices she had to make, but she soon settled in to her college life and found encouragement from new friends.

A GoFundMe account has been set up to help Gonzalez's family with funeral expenses. A vigil will be held at 7:30 p.m. Monday at Irving High School, 900 O'Connor Road.

Lockdown

North Lake College announced an intruder lockdown at 11:43 a.m. "Go to nearest room and lock-down. If not at campus STAY AWAY for your own safety," the school warned in a tweet.

Several nearby Irving ISD schools went on precautionary lockouts, and DART's Orange Line temporarily halted service to the North Lake College station.

Hundreds of students were seen streaming out of buildings into parking lots, while others remained barricaded in classrooms around the campus.

North Lake College-Intruder Lock-down. Go to nearest room and lock-down. If not at campus STAY AWAY for your own safety (DCCCD Alerts) — North Lake College (@northlakenow) May 3, 2017

About an hour later, Irving police spokesman James McLellan said that officers found the bodies of a woman and a man. One of them was the gunman, and officials said the shooting appeared to be a murder-suicide.

"We're just so devastated that something would happen on our campus," Christa Slejko, North Lake's president, said at a news conference.

We have what appears to be one victim deceased & the shooter has committed suicide. — Irving Police Dept. (@IrvingPD) May 3, 2017

Nasrin Nanbakhsh, a math tutor, said she was leaving the C Building, which is connected to the P Building, when she encountered the gunman in a hallway. She couldn't see his face and didn't recognize the woman he was with.

Nasrin Nanbakhsh saw the gunman standing over the victim. (Vernon Bryant / Staff Photographer)

The woman was sitting on a chair, facing the man, when he shot her three times, Nanbakhsh said.

"I didn't hear anything," Nanbakhsh said. "No screaming, no nothing."

Nanbakhsh, who said she had been trained about what to do in a shooting situation, ran back to her classroom and told her students to be quiet and lock the doors. The students huddled in the back of the room.

Sophomore students Tony Oslovar and Zach Svensson said they heard the shots nearby. Then they heard Nanbakhsh crying as she warned students, they said.

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McLellan had described the gunman, based on surveillance footage, as a white man with a brown buzz cut. He was wearing an orange tank top with a gray stripe, carrying a handgun and may have had a black jacket.

Police said that description matched the man they found dead and there did not appear to be a continuing threat at the school, but authorities continued to sweep the campus room by room for hours.

Students are prohibited from carrying concealed weapons at community colleges in Texas. A campus carry law for two-year colleges goes into effect Aug. 1.

1 / 28An Irving police officer works at the shooting scene on the North Lake College campus in Irving.(Jae S. Lee / Staff Photographer) 2 / 28People stand in the parking lot at the North Lake College campus in Irving.(Jae S. Lee / Staff Photographer) 3 / 28North Lake College in Irving announced a lockdown at the campus on Wednesday.(Jae S. Lee / Staff Photographer) 4 / 28U.S. Customs and Border Protection officers work at the shooting scene.(Jae S. Lee / Staff Photographer) 5 / 28People stand in the parking lot while police work at the shooting scene.(Jae S. Lee / Staff Photographer) 6 / 28An Irving police officer works at the shooting scene.(Jae S. Lee / Staff Photographer) 7 / 28Irving police officers work at the shooting scene.(Jae S. Lee / Staff Photographer) 8 / 28People walk out of a building at North Lake College campus in Irving.(Jae S. Lee / Staff Photographer) 9 / 28An U.S. Customs and Border Protection officer leads a group of students out of a building.(Jae S. Lee / Staff Photographer) 10 / 28Students evacuate a building at North Lake College.(Jae S. Lee / Staff Photographer) 11 / 28An Irving police officer gets tactical gear on as he arrives at the shooting scene.(Jae S. Lee / Staff Photographer) 12 / 28An Irving police officer puts tactical gear on.(Jae S. Lee / Staff Photographer) 13 / 28A DART police officer talks with students.(Jae S. Lee / Staff Photographer) 14 / 28Students walk out of a building at North Lake College.(Jae S. Lee / Staff Photographer) 15 / 28An Irving police officer checks his rifle as he arrives at the shooting scene.(Jae S. Lee / Staff Photographer) 16 / 28Police guide students and faculty out of a building after a shooting at North Lake College in Irving.(Vernon Bryant / Staff Photographer) 17 / 28Students and faculty exit a building after a shooting at North Lake College.(Vernon Bryant / Staff Photographer) 18 / 28People watch as police investigate after a shooting at North Lake College in Irving.(Vernon Bryant / Staff Photographer) 19 / 28Students and faculty exit a building after a shooting at North Lake College.(Vernon Bryant / Staff Photographer) 20 / 28A policeman runs across the street after a shooting at North Lake College.(Vernon Bryant / Staff Photographer) 21 / 28Police guide students and faculty out of a building.(Vernon Bryant / Staff Photographer) 22 / 28People hug outside moments after being let out of a building.(Vernon Bryant / Staff Photographer) 23 / 28Students and faculty exit a building with their hands up.(Vernon Bryant / Staff Photographer) 24 / 28Students and faculty exit a building with their hands up.(Vernon Bryant / Staff Photographer) 25 / 28Students and faculty exit a building after a shooting at North Lake College.(Vernon Bryant / Staff Photographer) 26 / 28People watch as police investigate after a shooting at North Lake College.(Vernon Bryant / Staff Photographer) 27 / 28Nasrin Nanbakhsh, a math tutor said she was walking down a hallway and saw the gunman standing over the victim.(Vernon Bryant / Staff Photographer) 28 / 28Students run towards their car as rain falls at North Lake College.(Vernon Bryant / Staff Photographer)

'Now you're that school'

Miguel Villatoro, a senior majoring in communications, was in a math class when he heard "bam, bam, bam."

He made eye contact with the professor.

"Were those gunshots?" she asked the class.

Terrified and trying to remain calm, they locked the door, turned off the lights and hid in a corner.

"It's a tragedy from beginning to end," Villatoro said. "You don't expect it, and now you're that school."

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Mamata Kc, a freshman, said she was in the A Building when she heard gunshots. She ran away, and then police ushered her and other students into the library.

She said they remained sheltered there for about 30 minutes.

"I just want to go home," Kc said afterward, as she waited outside the school for friends to pick her up.

Dennis Holmes, an adjunct professor at North Lake, told KXAS-TV (NBC5) that he had been ordered to take shelter in the Performance Hall room he was in. He said he grabbed furniture, mannequins — whatever he could find — to barricade the room's five doorways.

Campus security eventually came to the room and told them to leave.

#activeshooter at @northlakenow cops with assault rifles field hallways as we were evacuated pic.twitter.com/WE1jlhKjUd — justin livingston (@jliv9) May 3, 2017

North Lake College was closed the rest of the day, and it will remain closed until Monday. Students were allowed back on campus Thursday with police escorts to pick up belongings they had left behind.

Slejko said grief counselors will be available for students and staff when North Lake reopens.

In a statement, Dallas County Community College District Chancellor Joe May expressed grief and thanked police for their help.

"Now we must move forward as a community to console each other and to help one another during this difficult time," he said.

Staff writers Claire Z. Cardona and Anjulie Van Sickle contributed to this report.