A couple suspected in a Kansas slaying and shooting at Nebraska law officers, have been charged with attempted murder.

33-year-old Michael Engstrom and 34-year-old Jamie Engstrom were arraigned on Wednesday in southeast Nebraska’s Johnson County.

Michael Engstrom faces 21 felony counts, including five of attempted second-degree murder. Jamie Engstrom, who also is known as Jamie Russell, faces a dozen counts.

Authorities suspect Engstrom in a double shooting in Topeka, Kan., on Feb. 13 that killed Ricky Mitchell and wounded a woman. Police believe Engstrom robbed a convenience store in Pawnee City, Neb., hours later.

Authorities say that when Nebraska officers tried to stop the couple, Engstrom fired at them, wounding one. The high-speed chase ended when their car became stuck.