Robert Kyagulanyi, the Ugandan parliamentarian and pop star popularly known as Bobi Wine, returned to Uganda Thursday, where he is set to face charges of treason.
"They have not given any reasons for the arrests", Basalirwa said, adding that he had been ordered to turn back.
In a statement issued Wednesday, Ugandan police ordered that, "There shall be no unlawful rallies, processions and assemblies", that Kyagulanyi should only be met by "his immediate family" upon arrival and that he "is expected to comply with the traffic laws and regulations".
"From Entebbe Airport Police has delivered Kyagulanyi safely in his home at Magere, Wakiso District", Opondo said.
Reports indicate he has been driven to Kasangati Police Station.
Robert Kyagulanyi had left Uganda on August 31st for the United States to seek treatment, after he was allegedly beaten and tortured by the police while in their custody, which the authorities deny.
Ssentamu, who won a national assembly seat past year, faces treason charges over his alleged role in an incident last month in which the president's convoy was pelted with stones.
"The police have no business telling me who receives me and who can not or where I go and where I can not".
The 36-year old musician-turned-lawmaker, is widely seen as posing a significant challenge to Museveni, who has ruled the East African country since 1986.
Kyagulanyi has become an opposition firebrand, commanding widespread support among Uganda's youthful, urban population, earning him the government's ire.
His supporters had earlier in the day defied a heavy security presence and gathered at his residence to welcome him, but once he arrived by police escort, security forces did not attempt to stop crowds from gathering at his home. His arrest last month sparked riots by demonstrators demanding his release and security forces violently put down protests in the capital. Although he has campaigned on his record of establishing peace and stability, some worry those gains are being eroded the longer he stays in power.