Security has been tightened throughout the country with police and military seen patrolling major cities ahead of anticipated demonstrations against the government called to coincide with the nation's independence anniversary.
By midday, however, no demonstrations had begun.
People living in several major urban centers noted the day began with unusual quietness, with many people choosing to remain indoors amid uncertainty over whether protests would happen.
The demonstrations were called to call for political reforms in the wake of the unrest that followed last October's elections which left an unknown number of people dead.
Officials have conceded employing force against demonstrators, claiming that some groups were attempting to overthrow the regime.
On Tuesday, reporters observed streets that were largely deserted in the commercial capital, Dar es Salaam. This was a stark contrast to the city's typical weekday activity.
Although quiet, the atmosphere remained tense.
Security vehicles were seen driving along primary thoroughfares and junctions, while personnel were stationed at strategic locations, particularly near important public buildings and facilities.
On social media, activists and campaigners urged followers to remain vigilant, implying that any protest activity would likely commence later in the day. This communication mirrored past mobilization efforts in the country, when turnout increased later in the day.
Drivers who went out experienced regular stops at security checkpoints, where police interrogated motorists about their destinations.
The government has not issued specific statements on the heightened security measures or on the planned protests.
The government has prohibited the planned protests and called off independence anniversary events, advising the public to remain at home.
"The prevailing mood is one of quiet tension as people choose to stay home."
The overall situation depicted a nation on edge, where the threat of protest led to a preemptive security lockdown that left conspicuously quiet normally bustling cities.
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