BUJUMBURA, May 25 (AFP) - Burundi on Tuesday sought to calm tense relations with neighboring Democratic Republic of Congo (DRC) after Kinshasa's army chief threatened attacks on Bujumbura. "The Burundi government calls for calm and an end to efforts at intimidation," a communique from Bujumbura's communications ministry said. Kinshasa's top general, Faustin Munene, threatened Monday to attack Bujumbura in reprisal for Burundi's alleged active support for rebels in the eastern DRC. But Bujumbura "has taken legitimate measures to protect its borders and ensure the circulation of its goods," the statement said. "Terrorist groups are nevertheless spreading insecurity along our common border, and infiltrating from the DRC into Burundian territory where they're trying to commit violent acts," it added. The United Nations High Commission for Refugees (UNHCR) said about 800 DRC refugees arrived in Burundi last week, coming mainly from the border regions around Baraka and Fizi. Munene accused Burundi army helicopters of repeatedly violating (DR) Congolese airspace near Baraka, on the western shore of Lake Tanganyika, 80 kilometers (50 miles) south of the Burundi capital. Kinshasa claimed Thursday it had retaken the town, which had been controlled by rebels for several months. The DRC rebellion is supported by Rwanda, Uganda, and Burundi, but Bujumbura denies its troops have taken part in the latest round of fighting, which flared up 10 months ago. Kinshasa's army is backed by forces from Angola, Zimbabwe, Namibia, and Chad.  