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Some 666 residential and social housing facilities in two districts of the city of Kharkiv were left without heating on the night of February 24-25 due to breaks in the heating system.

Read alsoBlackouts hit over 150 settlements across Ukraine due to snowstormsThe first breakage of the heating system happened at around 15:00 in Nemyshliansky district on February 24, and two more occurred later on, at 21:00 on February 24 and at 2:00 on February 25, the press service of the State Emergency Service of Ukraine reported.

"Some 605 multi-apartment buildings, 26 schools, 21 kindergartens, and 14 medical institutions, including four hospitals, were left without heating. As of 7:00, February 25, there had been 144 facilities, namely 129 buildings, seven kindergartens, five medical institutions, and three schools, left with no heating," the press service said.

As reported, emergency crews of the municipal enterprises Kharkiv Teplovi Merezhi and Zhytlkomservis are being involved in repair work.

Long operation of the heating system is said to be the cause of the accidents.

Noteworthy, on February 22, more than 400 residential houses in Kharkiv's Kyivsky and Shevchenkivsky districts were left without heating due to breaks in the system. The municipal authorities were forced then to suspend classes at schools.