A gunman used an "explosive device" in an attack at two different residences near Dallas, Texas, that left four people dead and four others wounded in an apparent domestic dispute, police said on Thursday.
A suspect was taken into custody, Corporal Melissa Franks of the DeSoto Police Department told a news briefing.
Police would not confirm the gunman's identity, though several local media reports said the suspected attacker was Erbie Bowser, a former special education teacher.
"I believe there was an explosive device used," Franks said, adding that the FBI and other agencies had been brought in to investigate.
The shooting spree began in a home in Dallas and ended soon afterwards in another house about seven miles away in DeSoto, Franks said.
The victims, who died of apparent gunshot wounds, were not identified. In addition to the four people killed, two in Dallas and two in DeSoto, four others were wounded, including two boys aged 11 and 13, Franks said.
Laura Jobe, a spokeswoman for the Mesquite Independent School District outside of Dallas, confirmed that Bowser, a certified special education teacher, worked at two schools there from December 2001 through March 2010, and left on good terms. He also coached football at the West Mesquite High School.
"He left on good terms. He did resign, he was not terminated," she said.
"He had a good history here, he was well liked. He's been described as a gentle giant," Jobe said, elaborating that Bowser was "very tall and just a very heavy man, a very large man."
A spokesman for the Dallas Mavericks professional basketball team confirmed Bowser had been a member of the group's male dance team, the Mavs ManiAACs. He left the squad in 2009 and the basketball team had not been in contact with him since then, the spokesman said.
Franks said no information about the suspect's background would be released, pending the filing of formal charges.
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