Somalia ? A bomb hidden under a pile of garbage killed at least 20 people, half of them women who were sweeping the street in Somalia’s capital, witnesses and doctors said Sunday.

The explosion and overnight attacks on military bases ended a brief period of relative calm that followed the signing of a peace deal between the government and the Islamic insurgency it is fighting. The agreement was already in jeopardy after the moderate cleric who signed it on behalf of the Islamic opposition movement was replaced by a hard-liner.

Several witnesses said the scene of Sunday’s explosion was littered with blood and body parts, and described hearing the screams of the wounded as bystanders tried to help. Salah Adde said he counted 15 bodies, including 10 female street cleaners.

“I saw an old women who lost two legs and a hand, she was bleeding and later died before our eyes but we could do nothing as we ourselves needed help,” Asha Ahmed, a 45-year-old woman who was wounded in the leg by shrapnel, told AP by phone from Medina hospital.

Dahir Dhere, the head of the hospital, said 47 wounded people were admitted – mostly women and children – and five died. Many were in critical condition, he said.