Authorities say there is no threat and have advised the public to stay calm and follow official channels for information.
A rare humanitarian ceasefire has allowed civilians to evacuate the Russian-occupied city of Oleshky.
Haley Stevens, a former congresswomen who lost out on the Democratic nomination to Abdul El-Sayed, endorses his opponent days before the vote.
The new police unit is a security measure in response to last year's deadly shooting attack at a Hanukkah festival.
Five officers from the Hamas-run police have been killed in Khan Younis and three people, including a child, killed in Gaza City, officials say.
Marta Shahbazi was an "inspiring, talented and passionate scientist", says the laboratory where she worked.
Police in Frankfurt say "violent riots" took place in the city centre, with unrest also reported in Berlin, Hamburg and Cologne.
Defeat for Serbia's Aleksandar Vučiċ in last weekend's vote was a carbon copy of Viktor Orbán's fall in Hungary.
The incumbent Republican running for re-election and allies have accused the Democrats of trying to confuse voters by recruiting a second Dan Sullivan to also stand in the race.