Charred beds and walls are seen on the fifth floor of Changfeng Hospital in Beijing following a deadly fire Tuesday that claimed the lives of 29 people as of 9 a.m. Wednesday. The local government announced that the fire was triggered by sparks from ongoing construction in the inpatient department. Photo: Zhang Ruixue/Caixin

A hallway in the inpatient department is severely damaged, leaving behind only charred walls and steel frames. Photo: Cui Xiankang/Caixin

The fire burned through a wall on the fifth floor of the hospital. Photo: Zhang Ruixue/Caixin

Fire extinguishers in the hospital are also damaged in the blaze. Photo: Zhang Ruixue/Caixin

The walls of a bathroom on the fifth floor are covered in soot left from the fire. Photo: Zhang Ruixue/Caixin

Scorched plants still sit on a fifth-floor windowsill. Photo: Zhang Ruixue/Caixin

A room has been damaged by the blaze on the fifth floor. Photo: Zhang Ruixue/Caixin

A door leading to a staircase on the fifth floor has been damaged by the flames. Photo: Cui Xiankang/Caixin

Exterior walls on the fifth floor have been completely burned through. Photo: Zhang Ruixue/Caixin

External air conditioning units for the inpatient department are damaged in the flames. Photo: Zhang Ruixue/Caixin

A room on the fifth floor shows signs of chaos, with items strewn across the bed including IV fluids and a patient chart. Photo: Zhang Ruixue/Caixin

Medical staff move items between the hospital’s outpatient and inpatient buildings on Tuesday night. Photo: Zhang Ruixue/Caixin

Firefighters continue to work through the night on Tuesday. Photo: Zhang Ruixue/Caixin

The effects of the blaze can be seen clearly on the exterior walls of the hospital’s inpatient department. The fire started around 12 p.m. Tuesday in the department’s east wing and was extinguished around 1:33 p.m. Photo: Zhang Ruixue/Caixin

Police officers were on the scene Tuesday night. Twelve people, including the hospital’s director, have been detained as part of the investigation, local authorities said Wednesday. Photo: Zhang Ruixue/Caixin