Four men including the lawyer of former Congolese vice-president Jean-Pierre Bemba have been arrested on suspicion of interfering with witnesses in the ex-warlord's war crimes trial, the International Criminal Court said on Sunday. Lawmaker Fidele Babala Wandu, of Bemba's MLC opposition party in the Democratic Republic of Congo, was also among the arrested and is currently being transferred to The Hague, the ICC said in a statement. Bemba's Movement for the Liberation of Congo said earlier that ICC warrants were carried out against Babala Wandu in Kinshasa, and lawyer Aime Kilolo at Brussels airport.