Talented journalist Lyra McKee shot dead in Derry on Thursday
She has been taken to Musgrave Serious Crime Suite in Belfast for questioning.
It brings to three the number of people arrested so far over her murder.
Two teenagers – aged 18 and 19 – were arrested last Saturday in Derry.
They were later released unconditionally on Sunday.
The 29-year-old journalist was died after she sustained a gunshot wound to head after a masked gunman fired shots at an armoured police landrover.
Her funeral will take place on Wednesday, April 24, at St Anne’s Cathedral in Belfast
