Former Congolese vice-president Jean-Pierre Bemba's lawyer and a member of his party have been arrested on suspicion of tampering with witnesses in the ex-warlord's war crimes trial in The Hague, party officials said Sunday. The chairman of Bemba's Movement for the Liberation of Congo said International Criminal Court arrest warrants were carried out against lawmaker Fidele Babala Wandu in Kinshasa and lawyer Aime Kilolo at Brussels airport.