In April 1855, explorer Lieutenant
Richard Burton had set out on his
search for the source of the Nile and was encamped near Berbera. On 19 April,
his camp was attacked and plundered. Burton identified the attackers as three sub-tribes of the Hab Awal clan in a letter to Brigadier Coughlin, the British Resident at Aden, on 23 April 1855:
23 April 1855 R.F Burton to Colonel W. Coughlin The BT. Resident Aden, Arabia Sir, I have the honor of enclose a report from Lt. Herne & a statement from Lt. Speke concerning the melancholy occurrence of the 19th inst... The people chiefly implicated in this outrage are the Mikahil, the Ayyal Ahmad & the Eesa Musa - all three sub tribes of the great clan, Habr Awal. The 2, however, are but little concerned. The Eesa Musa is the principal actor. According to Lieutenant
John Hanning Speke, a surviving member of the attacked crew, the attackers were led by Ou Ali (Aw Cali). The prefix of
Aw signifies Islamic importance in the Somali language. Before the attack, Lieutenant Burton had vocally expressed his dislike of the Abban fees for the local Habr Awal clan. He had also resisted the caravan fees and the hire of camels by the
Isa Musa tribe, which he regarded as extortionate. Burton had earlier disguised himself as an Arab merchant named "Haji Mirza Abdullah". However, he had still come under suspicion. On 1 January 1855, on his way to Harar with his camp, he encountered three men of the Habr Awal clan: Ali Hasan, Husayn Araleh and Haji Mohammed, who were highly respected by Emir
Ahmad III ibn Abu-Bakr, the Emir of
Harar. The three men reported to Burton's agent, Gerad Adan, that Burton was in the land only to spy on its wealth. Suspicion of Burton's camp was therefore already pronounced months before the attack. in the 1800s. On 18 April 1855, the day before the attack, Burton's camp was encountered by three horsemen, one of them Mohammed of the
'Isa Musa, another
Dublay of the
Ayal Ahmed, and the third unknown. Burton's camp had mistaken them for a foraging party and fired a warning shot over their heads. Burton sent the
Ras Khafilah (caravan leader) to ask the horsemen what they were doing. The horsemen responded that the people of the coast had reported that
Haji Sharmarke Ali Saleh planned to seize Berbera and that his vessels were docked in
Siyara. However, this was a lie and Burton concluded that the horsemen were spies. As claimed by French explorer and geographer Henri Duveyrier, the
Senussiya order might have played a role in this event in Berbera in 1855. , who was impaled in the attack. The point entering one cheek and exiting the other. During the attack, the well-armed Somalis killed Lieutenant Stroyan, and wounded Burton. Lieutenant Speke was imprisoned but later on managed to escape. == The blockade ==