Mugabe, who was 95 when he died Friday in Singapore.
Zimbabwe's military appeared to be in control of the country Wednesday as generals denied staging a coup but used state television to vow to target "criminals" close to President Robert Mugabe.
An AFP reporter witnessed cars being turned back by soldiers near parliament, while other military vehicles were stationed outside the offices of the ruling ZANU-PF party in the capital Harare.
Zimbabwean military officers read an address live on state TV in the early hours of Wednesday, saying they were not launching a coup but were "targeting criminals around".
The US embassy in Zimbabwe on Wednesday warned its citizens in the country to "shelter in place" due to "ongoing political uncertainty.
Tensions between Mugabe and the military that has been a key buttress to his reign have intensified, and prolonged gunfire erupted near his private residence in the suburb of Borrowdale.
Zimbabwe was reeling today after the army warned it could intervene if President Robert Mugabe continued to purge veteran ruling party figures in an apparent effort to help his wife succeed him.