A Gaza health official says a Palestinian militant has been killed in an explosion in the coastal strip.

The circumstances of Wednesday's incident were not immediately clear. Gaza health ministry spokesman Ashraf al-Kidra said the man was killed in an Israeli attack. The Israeli military denied responsibility.

Al-Kidra says 33-year-old Mohammed al-Ejlla was killed near the border with Israel. He said two teenagers were slightly injured in the incident.

The Islamic Jihad militant group confirmed that al-Ejlla was one of its fighters.

Flare-ups along the border have been rare since Israel and Gaza's Hamas rulers fought an eight-day battle in 2012. But violent incidents occasionally occur.