New York bombings suspect Ahmad Khan Rahami is in custody after apparently being injured in a shootout with police in Linden, New Jersey.
Footage showed him apparently conscious on a stretcher. Two police officers were injured in the exchange.
Linden is four miles (6km) south-west of the city of Elizabeth, where further devices were found late on Sunday.
The 28-year-old Afghan-born US citizen had been named by the FBI as a suspect in Saturday’s bombing in Manhattan.
His family home in Elizabeth was being searched by officers.
The bombing in the Chelsea district of Manhattan injured 29 people. An unexploded device was found nearby.
Other devices have been found or have exploded in New Jersey over the past few days.
Early on Saturday a pipe bomb exploded in a shore town ahead of a charity race. No-one was hurt.
One of several devices found in an abandoned backpack near the railway station in Elizabeth as a police robot was trying to disarm it in the early hours of Monday morning.
President Barack Obama, speaking in New York, said officials did not believe there was a connection between events in New York and New Jersey and the stabbing attack in Minnesota, also on Saturday, in which nine people were injured.
That attack was apparently carried out by a 22-year-old ethnic Somali.
Mr Obama said it was “extremely fortunate” that nobody was killed in the bombings in New York and New Jersey.