An explosion hit a bridge near an upscale neighborhood in central Cairo on Sunday, killing at least one person and wounding another, police said.

An Associated Press reporter saw a corpse laying in a truck on the bridge, which connects Cairo's sister city of Giza to its upscale Zamalek neighborhood. Dozens of people gathered at the scene, some yelling in outrage, others in fear.

"All of a sudden a bomb blew up and there was lots of smoke," said Ahmed Hussein, an eyewitness who was on the bridge at the time of the blast. "The soldier in the kiosk was killed. His body was torn apart."

A police officer at the scene said one person was killed in the blast, while another reached by telephone confirmed the death and said one person was wounded. The police spoke on condition of anonymity as they weren't authorized to speak to journalists.

Attacks mainly targeting Egyptian security forces have spiked since the 2013 military overthrow of Islamist President Mohammed Morsi following massive protests against his divisive rule.

Explosions sometimes hit civilian areas. Last week, a militant group known as "Ajnad Misr," or "Egypt's soldiers," claimed responsibility for a bombing in front of Cairo University that wounded eight people, including four police officers. Another bomb exploded Saturday, causing no casualties.