Authorities said a panic-stricken man who dashed into a Dallas County jail lobby on Saturday morning, shouting that his wife was chasing him in an attempt to kill him, died after being handcuffed and losing consciousness.

Dallas County sheriff’s spokesman Raul Reyna said the 47-year-old man parked in a crosswalk in front of the county’s central jail and behaved erratically as he ran into a lobby late on Saturday morning, calling for a supervisor.

Reyna said the man ran into another lobby area, where a deputy handcuffed him to try to prevent him from hurting himself or others.

Reyna says the deputy had just sat the man down when he became unresponsive and stopped breathing. Efforts to revive him failed and he was pronounced dead at about 11.30am.

A cause of death had not immediately been determined.