Rothbury, England (CNN) -- Police in northeastern England believe they've spotted Raoul Thomas Moat, wanted for a series of shootings last weekend.
Northumbria police said a man fitting Moat's description has been located in the river bank area in the vicinity of Rothbury. There is an "ongoing operation" in the area and police are "negotiating," but no arrests had been made, they said.
A Rothbury resident named Ryan Phillips said he was walking his dog along the river bank when a man wearing a cap was seized by policemen. One policeman held a gun to the man's head, said Philips.
Resident Carolynn Crawford said she was trying to get to a wedding reception on the other side of the river. Guests couldn't get there because of the ongoing police operation, she said.
On the perimiter of the standoff, there was a man in tears among the witnesses gathered. He said his wife was stranded in the area cordoned off by the police.
Moat has been missing since Saturday, July 3. That's when he allegedly shot and wounded his former girlfriend and killed her new partner. Moat also allegedly shot and wounded a police officer on patrol on Sunday.
Rothbury has been in a state of "lockdown" this week, amid suspicion the 37-year-old Moat is hiding in the area. Armed police were at checkpoints on roads in and out of Rothbury and stationed on street corners. Residents were warned to stay indoors, and police said Moat was "armed and dangerous".
