"I know that this cruel loss has brought immense sorrow and I would like you to know that the African football fraternity shares in this pain," Ahmad added.
The 23-year-old broke the deadlock in the 74th minute by thumping in a long-range effort after combining with Darlan Mendes.
However, the opener for Sharjah came in the injury time of the first half when winger Saif Rashid received a Coronado free kick and fired his header into the bottom corner.
El Tri and Guatemala have met 33 times, with Mexico winning 21, drawing eight and losing four.
If Flamengo's secondary samples prove positive, the players will be isolated for 14 days before being tested again, according to CONMEBOL guidelines.
According to ski amateurs, the excitement of racing down the piste may be as pure as the mountain snow or as bracing as an Arctic chill. However, getting good at skiing is extremely challenging.
It has been such a complicated summer for FC Barcelona that it is almost hard to know where to begin. Ronald Koeman takes over a side that is now without Ivan Rakitic, Arturo Vidal and Luis Suarez, who joined Atletico Madrid on Wednesday night. Lionel Messi will clearly be the focus of attention after his summer request to leave the club, but Antoine Griezmann has to step up after Suarez's departure and Frenkie de Jong has to do the same in a side now without Vidal and Rakitic.
Leandro Martinez gave the hosts hope by combining with Cristian Colman and beating goalkeeper Cesar at his near post after some sloppy Flamengo defending.
"The players are asymptomatic and have been isolated under the supervision of the club's medical department," Flamengo tweeted on Sunday night.
BEIJING, Sept. 26 (Xinhua) -- Relatively unheralded runners Su Guoxiong and Dou Faxian upset a strong all-Chinese field to take the men's and women's titles respectively at the inaugural Duolun Marathon race in Duolun, Inner Mongolia, on Saturday.
Both sides struggled to create clear scoring opportunities, but as the match seemed to head for a draw, a low drive from Quintana put Chengdu ahead in stoppage time.