SUGAR LAND, Texas – A Clements High School athlete died after competing in a swim meet Saturday morning, officials said.

A message posted on the school's Twitter page identified the student as Brian Yuen.

According to a written statement from the Fort Bend Independent School District, Yuen began experiencing a medical emergency after competing in an event at the Don Cook Natatorium. Staff called 911 and helped him until paramedics arrived.

Yuen died after being taken to a hospital, officials said.

"The loss of a child is an unimaginable tragedy, and our thoughts and prayers are with the student’s family and friends during this extremely difficult time," district officials said in the statement.

Yuen was remembered Saturday at Edward Mercer Stadium during a football game between Ridge Point and Dulles high schools. Students from both schools wore blue, Clements' school color.

"Clearly with all the support you see tonight, he's clearly affected a lot of people in the course of his life," said Jefferson Ren, a senior at Clements High School and a friend of Yuen.

Friends and classmates of Yuen joined the crowd.

"If you talked to him he'd just be smiling and he would laugh," said Soham Dhar, a senior at Clements High School, and a friend of Yuen.

"He's this kind, charismatic, always involved, student council," said Aly Bobo, a senior at Clements High School, and a friend of Yuen.

Officials said that crisis teams will be at all FBISD high schools when classes resume Tuesday, but immediate support is being provided to the student’s fellow athletes.

A vigil for Yuen is scheduled for 5 p.m. Sunday at Don Cook Natatorium.