While the range of goods has since widened, with stalls selling books, new and second-hand clothing, and jewellery, the Lock retains its focus as the principal Camden market for crafts. There is a large selection of fast food stalls. In 1991 a three-storey indoor market hall designed by architect John Dickinson was opened on the site of the first outdoor market. In the style of the traditional 19th century industrial architecture and housing in the area, it is built of brick and cast iron. It attracted large numbers of visitors partly due to stalls being open on Sundays, when previous to the Sunday Trading Act 1994, shops were not permitted to operate on Sundays. On 28 February 1993, the Provisional IRA exploded a bomb hidden in a litter bin on Camden High Street near the market, shortly after lunchtime. The bomb injured 11 people.