KYIV—Ukraine’s third-largest bank dismissed its chairman on Monday after a Kyiv court ordered him to be put under house arrest while police investigate a scuffle with journalists in his office. Last week, police and prosecutors launched an investigation after the news outlet Radio Liberty said staff at the state-run Ukreximbank attacked a team of its journalists who were investigating the bank’s lending practices. Ukreximbank’s supervisory board suspended its chairman, Yevgen Metsger, and apologised to the journalists after Radio Liberty aired footage and audio of the incident. Metsger has said he would resign if police found him guilty of a crime. On Monday a court ordered Metsger to remain under house arrest between the hours of 10 p.m. and 6 a.m. every night, the Kyiv city prosecutor’s office said in a statement. “Two persons, the head of the bank and the official in charge of information policy, have been placed under …