Four suspected Inter Services Intelligence agents were arrested by the Task Force police in Secunderabad on Thursday.
Two persons were arrested in the limits of Bownpalli police station and two others were taken into custody from Maredpalli police station, Task Force police said.
According to a preliminary enquiry, the arrested persons were allegedly working for the Pakistan's Inter Services Intelligence in Secuderabad, they said.
The arrested included Jaheer and Jaweed who were in the cellphone marketing business working in the Jagdish market of the busy Abids area.
The other two were Syed Julfikar Ahmed, a sales representative, and Ahmed Qureshi, a motor mechanic, police said.