Odom was taken into custody by the Secret Service after he threw suspicious objects over the south fence of the White House.
The incident started about 8:30 p.m. ET, the source said.
Pastor Tim Remington was found by police at 2 p.m. Sunday in the parking lot of the Altar Church in Coeur d’Alene, Idaho. He had several gunshot wounds but is expected to survive.
Police in Couer d’Alene have said the shooting in Remington’s church was “a preplanned attack,” but they were still searching for a motive.
On Tuesday, police announced that Odom had sent a letter to his parents along with a flash drive containing multiple electronic documents. Some media members also received copies of the letter and similar flash drives.
Those documents show Odom planned to attack Remington and another church member, Detective Jared Reneau said in a written statement.
Police wouldn’t comment on the content of the letter or flash drive files.
Odom, 30, was named as a suspect late Sunday.
“I will tell you that some details surrounding Mr. Odom’s planning are disturbing,” Coeur d’Alene Police Department Chief Lee White said at a news conference Monday according to KREM.
White said authorities have not yet found any connection between the suspect and the church. The incident was caught on security cameras.
Remington delivered the invocation at a rally for Republican presidential candidate Sen. Ted Cruz on Saturday, but police say they have not found any information indicating the shooting was politically motivated.
“We’ve been waiting for somebody who represented God for a long time,” Remington said at the rally. “We are here to pray that God’s will be done.”
The youth pastor at Altar Church told KREM that doctors have said Remington was very lucky to survive the attack.
“We know it’s not luck; it was totally God,” the pastor said. “It’s a miracle.”