Security has been tightened throughout the country with officers and soldiers observed on patrol in key urban areas ahead of anticipated demonstrations against the government scheduled for independence day.
By midday, however, no demonstrations had begun.
Residents in several major urban centers reported an unusually slow start to the day, with a large number opting to stay home amid uncertainty over if the demonstrations would proceed.
The protests were organized to call for changes to the political system in the wake of October's post-election unrest which left an unknown number of people dead.
Officials have conceded using force against protesters, asserting that certain elements aimed to topple the government.
Correspondents noted on Tuesday nearly empty streets in the business hub, Dar es Salaam. This stood in sharp contrast to the city's usual weekday bustle.
While quiet, a palpable tension filled the air.
Security vehicles were seen driving along primary thoroughfares and junctions, while personnel were stationed at key points, particularly near key public infrastructure.
On social media, activists and campaigners urged supporters to stay alert, suggesting any demonstrations were unlikely to begin until the afternoon. The messaging echoed previous protest calls in Tanzania, when turnout increased later in the day.
Motorists who ventured out reported frequent checks at roadblocks, where officers questioned drivers about their destinations.
Authorities have not provided specific statements on the increased security or on the planned protests.
Tanzanian authorities have banned the intended demonstrations and cancelled independence day celebrations, urging citizens to stay indoors.
"With many staying at home the atmosphere is quiet but tense."
The overall situation painted a picture of a nation on edge, where the potential for demonstration resulted in a preemptive security lockdown that left conspicuously quiet typically busy cities.
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