DC Mayor Muriel Bowser’s sister died Wednesday from COVID-19 complications.

Bowser announced in a statement that her only sister and oldest sibling, Mercia Bowser, died after battling COVID-19 related pneumonia at MedStar Washington Hospital Center. She was 64.

“My family and I are mourning the loss of my sister, Mercia Bowser, who passed away this morning due to complications related to COVID-19,” the mayor said in a statement.

“Mercia was loved immensely and will be missed greatly, as she joins the legion of angels who have gone home too soon due to the pandemic.”

Mayor Bowser said her sister is survived by their parents, Joan and Joseph Bowser, siblings, nieces and nephews.

“Mercia was a loving daughter, sister, aunt, and friend. She worked tirelessly for children, the elderly, and those with behavioral disorders until her retirement and beyond,” the mayor said.