This image provided by the Pinellas County Jail shows a booking photo of John Nicholas Jonchuck Jr.
January 8, 2015 10:35 AM EST

A Florida father charged with hurling his 5-year-old daughter from a Tampa Bay bridge just after midnight Thursday had filed a domestic violence injunction against the girl’s mother last month, police revealed. That request was declined.

A motive for the heinous act, however, wasn’t immediately clear after the suspect — 25-year-old John Jonchuck Jr. — refused to talk after his arrest, St. Petersburg Police Chief Tony Holloway said at a news conference Thursday morning.

Jonchuck, who had custody of his daughter, had been sitting in his Chrysler PT Cruiser at the top of the Dick Misener Bridge moments after speeding…

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