Jacob Blake, who remains hospitalized after sustaining multiple injuries, is now handcuffed to his bed, his family said.

Blake's uncle told CNN on Thursday that Blake's father visited the Wauwatosa, Wisconsin hospital where his son is recovering from at least one surgery. He was "heartbroken" to see that his son was handcuffed.

"This is an insult to injury," Justin Blake, the uncle of the victim, said. "He is paralyzed and can't walk and they have him cuffed to the bed. Why?"

Blake, a 29-year-old Black man, has spent several days in the hospital. A Kenosha police officer shot him seven times in the back on Sunday while trying to detain him, state investigators said.

Kenosha police and sheriff's department, as well as the district attorney's office, did not immediately respond to a request for comment. CNN has reached out to the Blake family's attorneys.

A spokesperson with the Froedtert Hospital, where Blake is being treated, deferred CNN's questions to the Wisconsin Department of Justice.