Four more teenagers have been arrested in connection with an attack on a woman in Bridlington which left her blind in one eye.
Humberside Police said the 41-year-old was assaulted by a group of youths at Elma Villas on 5 October.
Four boys aged 14, 15, 16 and 17 have been arrested for violent disorder.
Three 16-year-old boys have already been charged with violent disorder. One of them also faces an assault charge.
Police said medics believed the woman would not regain sight in her eye.
A spokesman said investigations were continuing and more arrests could be made.