More sad news to report from the NFL community, which mourns the loss of former Dolphins and Giants safety Jarvis Williams. 

The one-time Florida Gators star has died of an apparent heart attack at the age of 45, according to the Sun-Sentinal.

UPDATE: The medical examiner in Palatka, Fla. has ruled that Williams died of an acute asthma attack. 

Williams had started volunteering as a football coach at Interlachen High School in Putnam County, Fla. earlier this year. According to the school's principal, Phyllis Criswell, Williams appeared to be in good shape and seemed healthy at Tuesday afternoon's practice.

"This has been very hard on our football players," Criswell said. "They have grown to care about Jarvis and were looking forward to their [scrimmage] this Friday. Now they'll be playing in dedication to him." 

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Williams was a second-round pick of the Dolphins in 1988, an teamed with former Gators safety Louis Oliver for the Dolphins from 1989-93.

Williams played one season for the Giants in 1994 before his NFL career ended.

Williams was inducted into the University of Florida Athletic Hall of Fame in 2001 after a career that saw him play in 45 games from 1984-87 and produce 10 interceptions and 239 tackles.