The April 6 youth movement released a statement Friday calling for activists nationwide to join the protest against the detention of the revolutionary group’s founding member Ahmed Maher.

Egypt’s security forces detained Ahmed Maher earlier on Friday as he arrived to Cairo Airport from Vienna following a political trip in the United States.

The April 6 spokesperson Engy Hamdy said that members of the youth group have already gathered at the prosecution office in Nasr City where Maher is being questioned.

“If Maher’s crime is inciting protests at the home of the Interior Minister then we are all inciters...Morsi and his Ministry of Interior should know very well who the April 6 youth are...beware of our anger,” Hamdy said in a media statement.

An interior ministry official said that Maher was detained based on an arrest warrant issued by the prosecutor-general for accusations of inciting protests in front of the Interior Minister residence, according to state-run news agency MENA.

On 29 March, four members of the movement were arrested and charged with rioting and resisting authorities after security forces dispersed a protest held by the youth movement at the residence of Minister Mohamed Ibrahim in New Cairo.

The protesters held women's underwear and banners accusing the ministry of "prostituting" itself to the ruling Muslim Brotherhood regime.

One month later, a New Cairo court ordered the release of the four members. However, it was unclear whether or not the charges against them have been dropped.

The April 6 movement had critically supported President Morsi in the June 2012 presidential elections against Mubarak era candidate Ahmed Shafq.

However, the movement has been steadily condemning Morsi's policies accusing the Brotherhood leader of betraying his pro-revolution campaign promises.