Security has been tightened throughout the country with officers and soldiers observed on patrol in major cities ahead of expected demonstrations against the government scheduled for the nation's independence anniversary.
By midday, however, no demonstrations had begun.
People living in Dar es Salaam, Arusha, Mbeya, Mwanza noted the day began with unusual quietness, with many people choosing to remain indoors amid uncertainty over if the demonstrations would proceed.
The demonstrations were called to demand political reforms in the wake of the unrest that followed last October's elections which left an unknown number of people dead.
The authorities have admitted using force against protesters, claiming that some groups were attempting to overthrow the regime.
Correspondents noted on Tuesday nearly empty streets in the commercial capital, Dar es Salaam. This was a stark contrast to the city's usual weekday bustle.
The quiet was undercut by a persistent sense of tension.
Armored vehicles were spotted cruising along primary thoroughfares and junctions, while officers took up positions at key points, including around key public infrastructure.
Through online platforms, organizers advised supporters to stay alert, suggesting any demonstrations were unlikely to begin until the afternoon. This communication mirrored past mobilization efforts in the country, when participation grew as the day progressed.
Motorists who ventured out reported frequent checks at roadblocks, where police interrogated motorists about their destinations.
The government has not issued detailed comments on the increased security or on the scheduled demonstrations.
Tanzanian authorities have banned the intended demonstrations and called off independence anniversary events, urging citizens to stay indoors.
"With many staying at home the atmosphere is quiet but tense."
The day's events depicted a nation on edge, where the potential for demonstration led to a security clampdown in advance that effectively emptied typically busy cities.
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