(Reuters) - Allowing Ukrainian convicts to serve in the military came a step closer on Wednesday as lawmakers approved a first reading of a bill designed to help replenish and rotate troops exhausted after two years of war with Russia.

       The bill envisages prisoners who join the army becoming eligible for parole.

       Those convicted of crimes against humanity, sexual violence, murder or crimes against national security would not be allowed to serve, lawmaker Oleksiy Honcharenko said on Telegram.

       A separate bill setting out large fines for citizens who fail to abide by mobilisation rules was also passed at the first reading.

       It is not clear how many extra personnel would be eligible to join the military if the steps become law.

       The convicts bill is likely to see changes before the final reading, in order to eliminate the risk of corruption, another lawmaker, Yaroslav Zhelezniak, said. No date has been set for the final reading after it is further discussed by a committee of lawmakers.

       Kyiv troops have been fighting against the better equipped Russian military, with vast mobilisation potential, since the full-scale invasion in February 2022.

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       Ukraine's parliament has also started reviewing the final reading of a complex bill amending the army mobilisation process after months of criticism and discussions, with a vote on that expected on Thursday.

       It is expected to widen Kyiv's capability to call up new servicemen amid significantly fewer volunteer fighters and numerous cases of draft evasion as the war has dragged on.

       (Reporting by Yuliia Dysa; Editing by Alison Williams)