The man, 42, was detained at around 8 p.m. He tried to flee the scene.
Two dead Ukrainians were found in Kaunas on Wednesday and Thursday.
A call about a fire in a nine-storey apartment building in Kaunas was received at 10.44 p.m. on Wednesday. Firefighters took two Ukrainian citizens out of an apartment on the second floor. A man born in 1989 was later pronounced dead by medics, and the other one, born in 1994, was taken to hospital.
Later on, a third Ukrainian citizen, born in 1998, asked for medical assistance. He fell out of the apartment through the window during the fire. It later turned out that one Ukrainian was murdered and there was also an attempt to murder another one, and the fire was started as a cover-up.
Kaunas police said they were looking for two Ukrainian suspects on Thursday. But the body of a man, born in 1985, was later found in a covered sand box near apartment blocks. Officers suspect it’s one of the two Ukrainian they were looking for.
According to police, the Ukrainian were known to each other as they came to work in the construction sector in Lithuania and planned to leave for Ukraine on Thursday.
Based on an initial investigation, a dispute broke out among the men, leading to a lethal outcome.