The National Investigation Agency on Tuesday arrested Syed Salahuddin's son Syed Shahid Yusuf in connection with terror funding case. It is learnt that Syed Shahid Yusuf works in the horticulture department of Jammu and Kashmir state government. The detention comes a day after the Centre announced the appointment of a special representative to carry forward the dialogue in Jammu and Kashmir. Earlier on Monday, Yusuf was summoned by NIA in a case registered against Hizbul Mujahideen in Delhi in the year 2011.