A series of explosions late last night rocked this capital, already tense over a contentious campaign for elections scheduled in two weeks. At least two persons were killed and four were injured by a bomb in a black township.

Police said they had no idea who was responsible but indicated the explosions were involved with the elections, with at least two thought to have been caused by land mines set off with timing devices, Washington Post correspondent Jay Ross reported.

Despite seven years of bloody guerrilla warfare that ostensibly ended in December with a shaky cease-fire, it was the first time in three years that Salisbury has been hit by a major bombing attack. The was had little direct impact on the capital, where the bulk of the 200,000 white minority population is concentrated.

The bombings came on the even of a massive call-up of military police reservists in preparation for the Feb. 27 to 29 election of a black-majority government.

In a followup to warnings that guerrilla leader Robert Mugabe's party faced banning because of intimidating actions, eight party officers -- including three candidates in the elections -- were arrested.

Meanwhile, white Rhodesians voted for the 20 representatives they are allowed in the 100-seat Parliament, Former prime minister Ian Smith's Rhodesian Front Party was expected to capture all the seats, 14 of which were uncontested.