"Extremely anguished by the fire tragedy in Surat. My thoughts are with bereaved families. May the injured recover quickly. Have asked the Gujarat government and local authorities to provide all possible assistance to those affected," Modi tweeted.
Home Minister Rajnath Singh and BJP President Amit Shah also condoled the loss of lives in the fire tragedy.
"Deeply saddened by the loss of precious lives due to fire in Surat. My thoughts are with the families of the deceased. I pray for the speedy recovery of the injured," Singh said.
Amit Shah tweeted: "Deeply anguished by the loss of lives due to a tragic fire accident in Surat, Gujarat. My condolences with the bereaved families. I pray for the speedy recovery of those injured. I urge our karyakartas of BJP Surat unit to assist the people in need."
Gujarat Chief Minister Vijay Rupani ordered an investigation into the tragedy and asked Mukesh Puri, Principal Secretary, Urban Development, to rush to Surat. He also declared financial help of Rs 4 lakh each to the families of the students who died.
At least 17 students of the coaching class were killed when they jumped off the commercial complex after it caught fire, Gujarat Gujarat Deputy Chief Minister Nitin Patel said.
The fire engulfed the third and fourth floor of the Taxshila Complex in Surat.
Visuals showed students jumping off the third and fourth floors of the building.