LUCKNOW, India — Thirty-three election personnel died on the final day of voting from heat stroke in just one state, a top election official said Sunday, after scorching temperatures gripped parts of the country.

While there have been reports of multiple deaths from the intense heat wave — with temperatures above 45 degrees Celsius in many places — the dozens of staff dying in one day marks an especially grim toll.

The India Meteorological Department said temperatures at Jhansi in Uttar Pradesh reached 46.9 degrees Celsius.

Navdeep Rinwa, chief electoral officer for the northern state of Uttar Pradesh, where voting in the seventh and final stage of elections ended Saturday, said 33 polling personnel died due to the heat.

The figure included security guards and sanitation staff.

"A monetary compensation of 1.5 million rupees ($18,000) will be provided to the families of the deceased," Rinwa told reporters.

Experts say that when a person is dehydrated, extreme heat exposure thickens their blood and causes organs to shut down.

Rinwa reported a separate incident in which a man queuing to vote in the city of Ballia lost consciousness while waiting in line.

"The voter was transported to a health facility, where he was pronounced dead upon arrival," Rinwa said.

India is no stranger to searing summer temperatures.

Years of scientific research have found climate change is causing heat waves to become longer, more frequent and more intense.