Ukraine and Russia exchanged 49 prisoners each at a border crossing with Belarus, marking the 56th such exchange between the two countries.

The swap took place just days after U.S. and U.K. diplomats began raising the issue of allowing Ukraine to target Russia with Western-supplied long-range weapons. President Volodymyr Zelenskyy confirmed that both sides transferred an equal number of prisoners.

Ukrainian military intelligence, HUR, facilitated the handover of Russian prisoners who arrived by bus at the border, while ambulances were on standby to receive Ukrainian detainees.

HUR spokesman Andriy Yusov said that the Russian prisoners were members of the “enemy army” but did not specify where they had been captured.