Kentucky highway shooting suspect vowed to "kill a lot of people," warrant says

The man suspected of opening fire on a highway in Kentucky sent a text message vowing to "kill a lot of people" less than 30 minutes before he shot and wounded five people on Interstate 75, authorities said in an arrest warrant.

"I'm going to kill a lot of people. Well try at least," Joseph Couch, 32, wrote in the text message, according to the warrant affidavit filed in court. In a separate text message, Couch wrote, "I'll kill myself afterwards," the affidavit says.

The Lexington Herald-Leader identified the woman Couch sent the text messages to as his ex-wife. The affidavit itself doesn't describe the relationship between Couch and the woman who received the texts.