NEWBERRY, S.C. (AP) — Officers in central South Carolina searched woods by helicopter and with dogs Thursday for four teenagers wanted in the killing of the father of one of the suspects in Tennessee.

The suspects, who are 15 and 16 years old, are likely armed with pistols and have several hundred rounds of ammunition, Newberry County Sheriff Lee Foster said.

The father, a 36-year-old man from Greeneville, Tenn., was found shot to death in his home around 11 p.m. Wednesday and his van was missing, deputies in Greene County, Tenn., said. Deputies did not release a motive for the killing.

A South Carolina trooper spotted the van about seven hours later at a rest area on Interstate 26 in Newberry, about 175 miles south of Greeneville. Before he could arrest the teens, they drove off, Foster said.

Troopers and deputies chased it down I-26, through the city of Newberry and down a two-lane road out of town. A deputy used spikes to puncture the tires, but the teens ran from the van into the woods, the sheriff said.

“We have recovered a number of firearms from the vehicle, but we haven't recovered all of the firearms,” Foster said.

No one was hurt in the chase, the sheriff said.

Foster said the suspects are three boys and a girl. Two of them are 15, and two are 16.

Deputies set up checkpoints to look at all vehicles entering or leaving the area and they are at schools as a precaution. The sheriff asked people living in the area to stay in their homes.