New details are being uncovered about the late Mike Hagerty.

The “Friends” actor passed away last week at the age of 67.

TMZ has learned the tragic details surrounding his death.

Sources say that he had an infection in one of his legs last April.

He returned to film season 2 of “Somebody, Somewhere.”

However, his energy levels were “really low” so he went back to the doctor.

While at the hospital, he had an adverse reaction to an antibiotic.

He had a seizure which caused him to go into a coma.

He passed away last week.