Security has been tightened throughout the country with officers and soldiers observed on patrol in major cities ahead of expected demonstrations against the government called to coincide with independence day.
As of noon, however, no protests had materialized.
Residents in several major urban centers reported an unusually slow start to the day, with many people choosing to remain indoors due to doubts about if the demonstrations would proceed.
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.
The authorities have admitted employing force against demonstrators, claiming that some groups were attempting to overthrow the regime.
Correspondents noted on Tuesday streets that were largely deserted in the business hub, 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.
Security vehicles were seen driving along primary thoroughfares and junctions, while officers took up positions 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 past mobilization efforts in the country, when participation grew as the day progressed.
Motorists who ventured out reported frequent checks at roadblocks, where officers questioned drivers about their destinations.
The government has not issued detailed comments on the heightened security measures or on the planned protests.
Tanzanian authorities have banned the planned protests and called off independence anniversary events, urging citizens to stay indoors.
"An eerie quiet masks the underlying tension felt by those indoors."
The day's events painted a picture of a country under strain, where the threat of protest led to a security clampdown in advance that effectively emptied typically busy cities.
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