HARARE, March 30 (Reuters) - Riot police patrolled the streets of Zimbabwe's capital on Sunday night and residents were told to stay indoors as a long delay in issuing election results fuelled suspicions that President Robert Mugabe's government was trying to rig the result.

Reuters journalists saw patrols of riot police patrols in central Harare. Some residents said police, who were moving in groups of at least six, were also patrolling in low income townships.

"They are here and we have been told to stay in doors," a resident in the eastern suburb of Tafara said. (Reporting by MacDonald Dzirutwe)

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