The CrossFit community is rallying after a CrossFit gym owner in Florida was shot and killed Monday, and his alleged assailant remains on the loose.

Richard Millsap, owner of CrossFit Mosaic in Winter Garden, FL, was leading a class at about 6:45 p.m. Monday when a gunman wearing sunglasses and a hat entered the gym and shot and killed him, according to several media reports. Eight people were in the class at the time, none of whom were harmed during the shooting.

Police have not officially identified Millsap as the victim, but friends and colleagues have acknowledged Millsap through media reports and social media outlets. Millsap was 33 and left behind a wife and two children, ages 7 and 2, the Orlando Sentinel reported.

Authorities did not provide the suspected shooter's name or say if any of the witnesses recognized the man, according to the Sentinel. The shooter escaped in a getaway car driven by a second suspect, whom police also are trying to track down.

Michael Pritzkau was not working out at the gym when the shooting occurred, but he and several others in Florida and nationwide are mourning the loss of his friend.

"It was devastating," Pritzkau told the newspaper. "Rich was a big inspiration. He got people going on the right path. A lot of people listened to him and looked up to him."

Armor CrossFit, based out of Ocoee, FL, announced on its Facebook page a fundraiser for Millsap's family at 10 a.m. Saturday, Aug. 31, throughout the central Florida CrossFit community. The benefit WOD (workout of the day) will be named the "Millsap." CrossFit gyms will accept a $10 donation and other donations for the WOD.

A message posted on the CrossFit Mosaic Facebook page Tuesday night thanked well-wishers for their support. The message was written by Millsap's widow, Karen, the Sentinel reported.

"This is very overwhelming but it's amazing to have such a community of support in CrossFit," read the Facebook post. "Richard was the true embodiment of 'sleep, eat, WOD.' For him, CrossFit meant 'getting fit to carry the cross.'"

In November 2012, CrossFit gym owner Joseph Lengel in Toledo, OH, was shot and killed outside of his studio. Last May, one man was sentenced to life in prison, another man received a 15-year-to-life sentence and two other men were sentenced to 15 years in prison for their roles in the robbery and shooting, according to reports. A fifth man, alleged gunman Deitrekk Boone, remained on the loose as of July.