Interviews were progressing "very slowly," the Times said, citing unnamed sources, adding that Hassan Omar had requested a translator.
He was also complaining of sickness and headaches after being subdued with the high-voltage Taser stun gun, the paper said.
In a highly unusual public dispute between police forces, London police chief Blair slammed as "an incredible risk" the use of the stun gun by officers in Birmingham.
"I'll be honest, we don't understand how they could possibly," Blair said on BBC television late Thursday when asked why the stun gun was used on Hassan Omar.



