All of them supposedly took their own lives in the past six weeks
Stanislav Melnyk, 53, an ex-MP was found shot dead in his bathroom on 9 March
Mykhaylo Chechetov, former party deputy chairman, died after apparently jumping from a window in his 17th-floor flat on 28 February; he had been accused of abuse of office and fraud
Serhiy Valter, a mayor in the south-eastern city of Melitopol, was found hanged on 25 February; he too had been accused of abuse of office
Oleksandr Bordyuh, a former police deputy chief in Melitopol linked to Mr Valter, was found dead at his home on 26 February
Oleksiy Kolesnyk, ex-head of Kharkiv's regional government was found hanged on 29 January
An interior ministry source told Interfax Ukraine news agency Mr Peklushenko, 60, had committed suicide in the village of Sonyachne, near Zaporizhzhya city.
Stanislav Melnyk, 53, an ex-MP was found shot dead in his bathroom on 9 March
Mykhaylo Chechetov, former party deputy chairman, died after apparently jumping from a window in his 17th-floor flat on 28 February; he had been accused of abuse of office and fraud
Serhiy Valter, a mayor in the south-eastern city of Melitopol, was found hanged on 25 February; he too had been accused of abuse of office
Oleksandr Bordyuh, a former police deputy chief in Melitopol linked to Mr Valter, was found dead at his home on 26 February
Oleksiy Kolesnyk, ex-head of Kharkiv's regional government was found hanged on 29 January
An interior ministry source told Interfax Ukraine news agency Mr Peklushenko, 60, had committed suicide in the village of Sonyachne, near Zaporizhzhya city.