The head of the State Agency of Ukraine on Exclusion Zone Management said on Wednesday that Russian troops who seized Chernobyl will suffer from the effects of radiation exposure.

Russian troops who occupied the Chernobyl exclusion zone dug trenches and shelters for their vehicles in the Red Forest, according to Yevhen Kramarenko.

The Red Forest was killed by radiation after the Chernobyl nuclear accident. It is the most contaminated part of the exclusion zone.

The Russians will feel the effects of radiation very soon. Kramarenko said at a press conference that some of them will feel it in months or years.

He confirmed earlier reports of Russian soldiers driving around the Red Forest without protective gear and inhaling radioactive dust.

According to the CDC, radiation poisoning can cause different effects depending on the strength and length of exposure.

According to the CDC, radiation poisoning can lead to internal bleeding and skin burns, as well as thyroid cancer and cardiovascular disease.

Russian troops left the exclusion zone at the beginning of the month after some of their soldiers panicked and got sick from radiation, according to The Guardian.

It is not clear what their symptoms were, although they showed up very quickly.

Kramarenko said that Ukrainian plant officials are working on developing additional safety measures to avoid similar events in the future, after the Russian troops left.

After the 1986 nuclear accident, the power plant was fully decommissioned and the remaining work at the site is mostly directed toward decontamination.

Kramarenko said it was not clear how high the radiation levels were at the moment because there was no electricity.

He said that until then they wouldn't understand the damage done.