(CNN) The eldest daughter of Eric Garner, who died after a New York City police officer put him in a chokehold, is in a coma after suffering a heart attack, according to multiple reports.

A series of tweets went out on Erica Garner's verified Twitter account asking people to pray for the activist. The account provided an update on Wednesday evening.

"Cat scan shows Erica suffered major brain damage from a lack of oxygen while in cardiac arrest," the tweet said. "Please continue to pray hard for Erica and pray for her family and kids just as much."

Update: Cat scan shows Erica suffered major brain damage from a lack of oxygen while in cardiac arrest. Please continue to pray hard for Erica and pray for her family and kids just as much. — officialERICA GARNER (@es_snipes) December 28, 2017

The Rev. Al Sharpton tweeted earlier this week that Garner, 27, had suffered a heart attack.

"Leaving hospital after praying for Erica Snipes, daughter of Eric Garner, who suffered a serious heart attack," he wrote on Twitter. "Please PRAY for her."