State Rep. Isaac Robinson died Sunday morning at DMC Detroit Receiving Hospital from a suspected coronavirus infection, hours after being transported to the hospital for breathing problems, his mother confirmed Sunday night.

Robinson, 44 and a Detroit Democrat, had not been tested for COVID-19 before being taken by ambulance to the hospital early Sunday morning, said his mother, former state Rep. Rose Mary C. Robinson, D-Detroit.

"I called EMS, they took him to Receiving at 6 a.m. and he was dead by 11," she told Crain's.

Rose Mary Robinson said her son had breathing difficulty in recent days, but resisted seeking medical attention.

"He wouldn't go to the hospital. I kept insisting the last three days," she said. "I kept saying, 'You should go to the doctor, go to the hospital.' Of course, he resisted."

"Tough guy," the mother added.

House Democratic Leader Christine Greig, D-Farmington Hills, said late Sunday that fellow Democrats were "devastated by the loss of our colleague."

"It is with extreme sadness that I share the passing of Rep. Isaac Robinson who was a passionate advocate for his community and constituentism," Greig said in a statement.

Robinson's death comes three days after state Rep. Tyrone Carter of Detroit tested positive for COVID-19.

Carter said Sunday night, "physically, I'm fine," but "devastated" by Robinson's death.

"I'm on the recovery road," Carter said. "Mentally, this one knocked the wind out of me. Detroit just lost a warrior."

Carter described Robinson as a passionate advocate for Detroit.

"A lot people didn't know how brilliant he was," he said. "You'd never know Isaac went to UM. You'd never know Isaac went to Northwestern Law School with (Michigan) Supreme Court Justice (Richard) Bernstein."

A lawyer by trade, Isaac Robinson was elected in 2018 to represent the 4th District in the Michigan House of Representatives, succeeding his mother in office. He served on the House's Commerce and Tourism, Regulatory Reform and Tax Policy committees while representing the eastern portion of Wayne County, including much of Detroit's Midtown and New Center neighborhoods and the city of Hamtramck.

Robinson had emerged as a vocal advocate for Detroiters in the Legislature.

"I will remember Isaac as a proud son of Rose Mary, an accomplished attorney, and a talented and effective representative of the people," House Speaker Lee Chatfield, R-Levering, said in a statement. "But most of all, I will remember him as a passionate defender of the city of Detroit and the people who lived there."

In a statment, Gov. Gretchen Whitmer said Robinson "had a huge heart, a quick wit, and a genuine passion for the people."

Before working in private law practice, Robinson was a political director for a local Teamsters union.

"He was incredibly engaging and empathetic to all around him, and this is a huge loss to our Legislature and the city of Detroit," attorney Jordan Acker, a University of Michigan regent, said Sunday on Twitter.

Robinson never married and had no children, according to his mother.

"Isaac was a fighter: For his community, for progressive issues, and for working people," state Rep. Darrin Camilleri, D-Brownstown Township, said Sunday on Twitter. "He wasn't afraid to let you know what he thought was right — because it usually came from his deep conviction to protect those who are left out and left behind."

As of 10 a.m. Sunday, the coronavirus had claimed the lives of 35 Detroiters.

More than 1,500 Detroit city residents have tested positive for COVID-19, according to the Michigan Department of Health and Human Services.

Editor's note: This story has been edited to correct a quote by Tyrone Carter to say that Robinson went to Northwestern Law School. This version is correct.