Bushueva's mother said she had not seen her daughter for two days.
Elsa Vidal, from the Paris-based group Reporters Without Borders, told RFE/RL that Bushueva's case underlines the worsening of press freedom in Uzbekistan.
"We are very worried about her situation," Vidal said. "And we would like to underline [that] in general, the situation of press freedom in Uzbekistan is very, very looming and is worsening. So we would like to see an improvement of the situation as soon as possible."
In 2005, the BBC World Service closed its Tashkent bureau, citing official harassment, while RFE/RL's operations in the country were shut down by Uzbek authorities.
(with material from Reuters, AFP, Interfax)
'Attacks On The Press -- 2006'
Ukrainian journalists demonstrating against censorship in December 2006 (RFE/RL)
'DOMINO EFFECT.' Two experts with the Committee to Protect Journalists told an RFE/RL-Radio Free Asia briefing on February 6 that their organization is concerned Russia's increasingly restrictive media environment is being copied by other countries in the CIS.
LISTENListen to the entire briefing (about 80 minutes):
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