Ugandan police have yet again arrested Kyadondo East MP Kyagulanyi Ssentamu alias Bobi Wine upon landing at Entebbe International Airport from the United States of America where he had gone for treatment.
A police official had said he was being escorted to his home in the capital Kampala and was not under arrest.
Some of the journalists arrested are; Kingdom TV's Siraje Kiberu, NTV's Joel Ssenyonyi, Eve Muganga attached to Daily Monitor and radio Sapiensia news reporter Charles Katabalwa, among others.
Uganda Communications Commission had banned live coverage of Mr Kyagulanyi's return.
The BBC's Fergal Keane accompanied him into his home, where the MP said he had "come back to fight".
In the past, Museveni's returning opponents have been greeted by large crowds that turned into an slow hours-long procession towards the capital marked by clashes between police and supporters.
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By publication time, a white police Land cruiser GX vehicle UP 7500 which is believed to have been carrying Bobi Wine, had stopped at Kasangati Police Station, a few kilometers from the legislator's home.
Museveni, a key US ally on regional security, took power by force and has since been elected five times.
Since entering parliament last year, Kyagulanyi, 36, and better known as pop star Bobi Wine, has emerged as a leading critic of President Yoweri Museveni, a 74-year-old former rebel leader in charge since 1986. Armored personnel carriers and police vehicles lined the route and journalists were prevented from traveling to the airport to cover the arrival.
He said he was beaten with an iron bar in detention in northern Uganda.
Police also surrounded the home of Kampala Mayor Erias Lukwago, and he was unable to leave, said another of the singer's lawyers, opposition legislator Medard Sseggona.
The return of the 36-year-old musician, known by his stage name of Bobi Wine, has rattled the government headed by 74-year-old President Yoweri Museveni, who has been in power since 1986 and leads a nation where almost 80 percent of the population is below the age of 30.