The Ferguson, Missouri, officer who was critically injured in a Michael Brown anniversary protest last week and is said to be fighting for his life is now showing "signs of progress," according to an update posted to his GoFundMe campaign.

Officer Travis “T.J.” Brown suffered a life-threatening brain injury Friday night after being knocked to the ground during a protest marking ten years since Michael Brown Jr.'s death in an officer-involved shooting. He remains in a coma, KSDK reports.

"He has undergone several surgeries and procedures to address the swelling and fluid on his brain," Brown's sister Christina Bailey wrote in the update. "In the past few days, we've witnessed a few small but significant signs of progress—three coughs, and slight movements in his leg and hand. These moments, though brief, filled us with hope and joy.

"(Wednesday), the doctors checked T.J.'s brain activity, and the results were encouraging. While we've been told that recovery will be long and challenging, we remain hopeful."

As of Friday August 16, the GoFundMe campaign had raised over $123,000 of a $150,000 goal to help lessen the financial burden on Officer Brown and his family.

"The outpouring of support has been truly overwhelming, and we are deeply grateful for the generosity and compassion that has been shown to us," Bailey wrote in the update. "It's clear that T.J. is surrounded by so much love, and that brings us immense comfort."

The suspect in the attack Elijah Gannt, reportedly tackled the officer taking him down to the pavement.

He is being held on a $500,000 cash-only bond, charged with assault of a special victim, resisting arrest and property damage.