The Uber driver accused in a deadly shooting rampage in and around Kalamazoo has been making threats, howling and showing other unusual behaviors in the last 17 months he has been in jail.

That's according to police reports WZZM 13 received through the Freedom of Information Act.

Jason Dalton is facing six counts of murder and two counts of attempted murder for the February 2016 shootings.

Earlier: Kalamazoo shooting suspect, Jason Dalton, faces 6 murder charges
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According to jail reports, a deputy listened in on one of Dalton's phone calls and heard him say he wanted to cut the throats of jail guards. Dalton also said he wanted to kill a specific deputy, and hoped when he got to prison, he'd be able to order a hit on the lawman.

The reports document how Dalton assaulted officers while he was being taken from a bathroom into his cell, injuring a deputy's hand. He also got into a fight with another inmate, and was once found "howling" inside his cell.

Dalton's trial is on hold while lawyers appeal a judge's decision to allow Dalton's statements to police to be used against him.

His attorneys plan to use an insanity defense.

You can read the incident reports here:

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