The hospital treating a Toronto-born teen injured in last week’s deadly attack at a Nairobi shopping mall released a statement on Monday, confirming the girl underwent surgery on Sunday.

Fardowsa Abdi, 17, is being treated at Sunnybrook Hospital after arriving in Toronto on Sunday afternoon.

She was wounded along with her 16-year-old sister, Dheeman, when gunmen from the al-Qaeda-linked group al-Shabaab stormed the Westgate mall in Nairobi.

A statement released by the hospital on Monday afternoon said medical staff are "continuing to assess her ongoing needs for care."

The statement went on to say the family is requesting privacy.

"Ms. Abdi is fortunate to have the strong support of her family and community in the Greater Toronto Area, who will help with her recovery," the statement reads. "The family would like to thank all of those who have assisted in the transfer and care of Fardowsa."

Abdi suffered serious injuries to her legs and torso when a grenade detonated near her and her sister. Dheeman suffered a broken finger.

Both girls were born in Toronto but moved to Kenya a few years ago.

The four-day mall siege, which included the collapse of part of the mall, left 67 people dead, including two Canadians. The Red Cross says 59 people remain missing, though the government puts that number at zero.

Kenyans have become increasingly frustrated over the government's unwillingness to share information about the attack, reports say. Almost no details have been released about what happened after the first hours of the siege.