Detroit ? A man opened fire during a church service Sunday, killing an 18-year-old woman and wounding her child before shooting another man outside, according to police.

Investigators believe a domestic dispute led to the shooting at Zion Hope Missionary Baptist Church about 11 a.m., said Second Deputy Police Chief James Tate.

Many of the hundreds of people in the church screamed as they ducked under the pews for protection, said Ann Armstrong, 30, who was attending the service.

Police did not identify the victims. The child did not have life-threatening injuries, but the third victim was in critical condition after he was shot trying to protect his wife from a carjacking attempt by the gunman, WWJ-AM reported.

Tate said officers were looking for Kevin Lorenzo Collins, 24, who was considered armed and dangerous.

After the gunman left, church members embraced each other before continuing to pray as police started coming in, she said.