A significant security presence has been deployed throughout the country with police and military seen patrolling key urban areas in anticipation 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 a large number opting to stay home due to doubts about whether protests would happen.
The protests were organized to demand political reforms following October's post-election unrest which resulted in an unconfirmed death toll.
The authorities have admitted using force against protesters, asserting 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 typical weekday activity.
While quiet, a palpable tension filled the air.
Security vehicles were seen driving along major roads and intersections, while officers took up positions at key points, particularly near important public buildings and facilities.
On social media, activists and campaigners urged followers to remain vigilant, 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.
Drivers who went out experienced frequent checks at roadblocks, where police interrogated motorists about where they were headed.
Authorities have not provided specific statements on the increased security or on the planned protests.
The government has prohibited the planned protests and called off independence anniversary events, urging citizens to stay indoors.
"The prevailing mood is one of quiet tension as people choose to stay home."
The day's events depicted a country under strain, where the potential for demonstration led to a security clampdown in advance that effectively emptied normally bustling cities.
Lena Hofmann ist eine erfahrene Journalistin mit Schwerpunkt auf Schweizer Politik und gesellschaftlichen Entwicklungen.