An hour after the meeting began as scheduled at 17:30, Colonel Dyer arrived at the Bagh with a group of ninety soldiers from the Gurkha Rifles, the 54th Sikhs and the 59th Sind Rifles . Fifty of them were armed with .303 Lee–Enfield bolt-action rifles. It is not clear whether Dyer had specifically chosen troops from that ethnic group due to their proven loyalty to the British or that they were simply the Sikh and non-Sikh units most readily available. He had also brought two armoured cars armed with machine guns; however, the vehicles were left outside, as they were unable to enter the Bagh through the narrow entrances. The Jallianwala Bagh was surrounded on all sides by houses and buildings and had only five narrow entrances, most kept permanently locked. The main entrance was relatively wide, but was guarded heavily by the troops backed by the armoured vehicles.