The Brief Sean Keenan, 40, is accused of leaving threatening voicemails targeting Delaware County Sheriff Siddiq Kamara. A Haverford man is accused of leaving threatening voicemails directed at Delaware County Sheriff Sheriff Siddiq Kamara. What we know:Sean Keenan, 40, allegedly called the Delaware County Sheriff's Office on July 18 and left two threatening voicemails. Investigators say in one of the voicemails, Keenan called Sheriff Siddiq Kamara a racial slur and threatened violence. Sean Keenan, 40, is accused of leaving threatening voicemails targeting Delaware County Sheriff Siddiq Kamara.